acustica [see all]

• Airborne Sound Insulation Calculator (R_w, UNI 11367) – Calcola il potere fonoisolante R_w di pareti divisorie con la legge di... IT, EN, ES, FR, DE

Biochimica [see all]

• Serial Dilution Calculator: Factor, Final Concentration – Calculate a serial dilution: per-step and total dilution factor, final concentration and... IT, EN, ES, FR, DE
• Primer Melting Temperature Calculator (Tm) – Calcola la temperatura di melting (Tm) di un primer PCR dalla sequenza:... IT, EN, ES, FR, DE
• How to calculate Michaelis-Menten kinetics – Compute enzymatic reaction rate v with Michaelis-Menten v = V_max·[S]/(K_m+[S]). Lineweaver-Burk, k_cat,... IT, EN, ES, FR, DE

Casa ed Energia [see all]

• Water softener sizing calculator: grain capacity salt regeneration cost – Calculate water softener size: grain capacity, hardness ppm, salt consumption, resin liters,... IT, EN, ES, FR, DE
• Solar panel payback calculator Italy 2026 ROI – Solar panel payback calculator Italy 2026: 3 kWp residential 5,000-7,500 €, production... IT, EN, ES, FR, DE
• Asphalt calculator: tons cubic yards driveway paving cost – Calculate asphalt tons and cubic yards for driveway, parking lot, private road.... IT, EN, ES, FR, DE
• Home Insurance Calculator: Sum Insured & Rebuild Cost – Calculate your home sum insured on the rebuild cost (not the market... IT, EN, ES, FR, DE
• AC BTU sizing calculator: air conditioner capacity tonnage room – Calculate BTU and tonnage needed for your AC: room square footage, insulation,... IT, EN, ES, FR, DE
• Concrete calculator NTC 2018 Italy – Italian concrete calculator NTC 2018 D.M. 17/01/2018: classes C25/30 C30/37, density 2400... IT, EN, ES, FR, DE
• Italian Drywall Calculator UNI EN 520 – Italian drywall calculator UNI EN 520:2009: sheets 1200x2000x12.5 mm, profiles Knauf Castellina... IT, EN, ES, FR, DE
• EV charging cost calculator Italy 2026: ARERA – EV charging cost calculator Italy 2026: home 0.30 €/kWh ARERA, public AC... IT, EN, ES, FR, DE
• Deck calculator: square feet boards joist cost composite wood installation – Calculate deck materials: square feet, boards, joists, stainless screws. Pressure-treated pine, cedar,... IT, EN, ES, FR, DE
• Septic tank sizing calculator: gallons capacity bedrooms code – Calculate septic tank capacity: gallons, bedrooms, US IPC code, EPA 625-R-00-008 standards,... IT, EN, ES, FR, DE

Chimica [see all]

• pH Buffer Calculator: Henderson-Hasselbalch, buffer capacity – Compute buffer pH via Henderson-Hasselbalch, base/acid ratio, buffer capacity β and how... IT, EN, ES, FR, DE
• Clausius-Clapeyron Calculator (Vapor Pressure vs T) – Clausius-Clapeyron equation calculator: vapor pressure P(T), heat of vaporization dH, water boiling... IT, EN, ES, FR, DE
• Equilibrium Constant Calculator (Kc, Kp, dG0, Q vs K) – Equilibrium constant calculator: Kc from concentrations, Kp from partial pressures, Kc-Kp conversion,... IT, EN, ES, FR, DE
• Pool Chlorine Dose Calculator: How Much Chlorine to Add – Calculate how much chlorine to add to your pool to reach the... IT, EN, ES, FR, DE
• Arrhenius Equation Calculator (Chemical Kinetics) – Arrhenius equation calculator: rate constant k from A, Ea, T; activation energy... IT, EN, ES, FR, DE
• Nernst Equation Calculator (Cell Potential, Membrane, pH) – Nernst equation calculator: electrochemical cell potential, biological membrane potential, pH dependence, equilibrium... IT, EN, ES, FR, DE
• Ideal Gas Law Calculator (PV=nRT): pressure, volume, moles, temperature – Calculate any variable of the ideal gas law PV=nRT by entering the... IT, EN, ES, FR, DE
• Beer-Lambert Calculator: absorbance, concentration, transmittance – Compute absorbance A=ε·c·L, concentration, transmittance %T and molar absorptivity ε via Beer-Lambert... IT, EN, ES, FR, DE
• Molarity Calculator: moles/L, mass, volume, dilution – Calculate molarity M = moles/L, required solute mass, solution volume, or dilution... IT, EN, ES, FR, DE
• pH Calculator: acidity, alkalinity, H+ concentration, pOH, buffer – pH calculator: pH = -log[H+] from concentration, or derive [H+] from pH.... IT, EN, ES, FR, DE

Cucina [see all]

• Food Cost Percentage & Menu Price Calculator – Calculate the food cost percentage, the suggested menu price and the margin... IT, EN, ES, FR, DE
• Sourdough Hydration & Baker's Percentage Calculator – Calcola l'idratazione reale in baker's percentage di un impasto a lievito madre... IT, EN, ES, FR, DE
• Italian Pasta Cooking Time Calculator – Italian pasta cooking time calculator al dente: spaghetti 10', penne 11', rigatoni... IT, EN, ES, FR, DE
• Sous-vide time temperature calculator HACCP Italy – Sous-vide time temperature calculator: beef 56°C 1-2h, chicken 64°C 1-3h, salmon 50°C... IT, EN, ES, FR, DE
• Pizza Dough Calculator: Napoletana STG Roman Teglia – Pizza dough calculator: flour, water, salt, yeast for Napoletana STG, Roman, Teglia,... IT, EN, ES, FR, DE
• Meat cooking time calculator: USDA HACCP Italy – Italian meat cooking time calculator: roast beef 30-50 min/kg, chicken 74°C internal... IT, EN, ES, FR, DE

Cybersecurity [see all]

• Cyber Insurance Cost Calculator – Assess your cyber insurance: compare the premium with the potential loss and... IT, EN, ES, FR, DE
• ISO 27001 / SOC 2 Compliance Cost Calculator (Security) – Calculate the total cost of a security certification (ISO 27001, SOC 2... IT, EN, ES, FR, DE
• Ransomware Cost Calculator – Calculate the real cost of a ransomware attack and compare the «pay... IT, EN, ES, FR, DE
• Penetration Testing Cost Calculator (Pentest) – Estimate the cost of a penetration test from the number of assets,... IT, EN, ES, FR, DE
• Data Breach Cost Calculator – Estimate the cost of a data breach: operational cost, regulatory fines (GDPR),... IT, EN, ES, FR, DE
• Password Entropy Calculator (Crack Time) – Calculate a password's entropy in bits and the time to brute-force it.... IT, EN, ES, FR, DE
• MTTR and Availability (Uptime) Calculator: Downtime and SLA – Calculate the MTTR (mean time to repair), the availability (uptime %), the... IT, EN, ES, FR, DE
• Annualized Loss Expectancy (ALE) Calculator: Quantitative Cyber Risk – Quantify cyber risk with the ALE: from asset value, exposure factor and... IT, EN, ES, FR, DE
• Cyber Insurance Premium Calculator: Estimate Policy Cost and Security – Estimate the premium of a cyber insurance from coverage limit, base rate,... IT, EN, ES, FR, DE
• Vulnerability Remediation Calculator: Backlog, Coverage and Risk – Calculate whether your vulnerability management program is winning or losing the race:... IT, EN, ES, FR, DE

Edilizia [see all]

• Concrete Slab Load Calculator (Eurocode 2) – Calcola il carico variabile ammissibile di una soletta piena in c.a. semplicemente... IT, EN, ES, FR, DE
• Heat Load and HVAC Sizing Calculator (BTU and kW) – Calculate the heat load of a room from area, height, insulation/climate, windows... IT, EN, ES, FR, DE
• Construction Contingency & Cost Overrun Calculator – Calculate whether your project contingency will suffice: from the base cost, the... IT, EN, ES, FR, DE
• Cost to Build a House Calculator – Calculate the cost to build a house: floor area, cost per m²,... IT, EN, ES, FR, DE
• Surety Bond Cost Calculator (Performance & Contract Bonds) – Calculate the cost of a surety bond (performance bond) from the contract... IT, EN, ES, FR, DE
• Roof Replacement Cost Calculator: Material, Labor and Total – Estimate the cost of replacing a roof from area, material cost, labor... IT, EN, ES, FR, DE
• Kitchen Remodel Cost Calculator: Cabinets, Countertops, Appliances, Labor and Total – Estimate the cost of remodeling a kitchen by breaking it down into... IT, EN, ES, FR, DE
• Asbestos Removal Cost Calculator – The same sheet costs 44 per m² on a warehouse and 106... IT, EN, ES, FR, DE
• Mold Remediation Cost Calculator – The 5 m² stain becomes a quote 5 times bigger: hidden extension... IT, EN, ES, FR, DE
• Water Damage Restoration Cost Calculator – Two identical floods on the floor, different bills at the end: drying... IT, EN, ES, FR, DE

Elettrotecnica [see all]

• Voltage Drop Calculator – Calculate the voltage drop of an electrical cable from current, length, cross-section... IT, EN, ES, FR, DE
• Voltage Drop Cable Calculator (IEC 60364) – Calcola la caduta di tensione ΔV in una linea in rame o... IT, EN, ES, FR, DE
• Voltage Drop and Cable Sizing Calculator (Cross-Section) – Calculate the voltage drop of a cable from current, length, cross-section and... IT, EN, ES, FR, DE
• Motor Full-Load Current Calculator (FLC): Single & Three-Phase – Calculate the full-load current (FLC) of a single-phase or three-phase electric motor... IT, EN, ES, FR, DE
• Generator Sizing Calculator: Power (kVA), Starting Surge and Consumption – Size the right generator: calculate the kVA size from continuous load, motor... IT, EN, ES, FR, DE
• Transformer Sizing Calculator: kVA, Power Factor and Current – Calculate the kVA size of a transformer from the load power (kW),... IT, EN, ES, FR, DE
• Motor Efficiency Calculator: Annual Energy Cost and Upgrade Saving – Calculate the annual energy cost of an electric motor, the energy drawn... IT, EN, ES, FR, DE
• Power Factor Correction Calculator: Savings & Capacitor Sizing – Calculate power factor correction: from the active power and the current and... IT, EN, ES, FR, DE
• EV Charging Time Calculator: kWh, Power and Charging Levels – Calculate the charging time of an electric car from the battery capacity,... IT, EN, ES, FR, DE
• How to calculate transformer turns ratio – Compute transformer turns ratio a = N₁/N₂ = V₁/V₂ = I₂/I₁. Step-up,... IT, EN, ES, FR, DE

Energia [see all]

• Battery Runtime Calculator: How Long Will It Last + DoD and Efficiency – Calculate how long a battery lasts with a given load, from capacity... IT, EN, ES, FR, DE
• Compressed Air Cost Calculator: What It Really Costs (per kWh and m³) – Calculate the annual cost of compressed air and the specific energy (kWh/m³)... IT, EN, ES, FR, DE
• CBAM Cost Calculator (Carbon Border Adjustment) – Calculate the cost of CBAM (carbon border adjustment) on your imports from... IT, EN, ES, FR, DE
• Solar Panel Cost Calculator: Panels, Inverter, Installation and Total – Estimate the cost of a solar PV system by breaking it down... IT, EN, ES, FR, DE
• Compressed Air Leak Cost Calculator – Calculate how much a compressed air leak costs per year from hole... IT, EN, ES, FR, DE
• HVAC Replacement Cost Calculator: Equipment, Installation and Total – Estimate the cost of replacing an HVAC system by breaking it down... IT, EN, ES, FR, DE
• LED Retrofit Calculator – An LED retrofit is a bond with an hourly coupon: the yield... IT, EN, ES, FR, DE
• Condensation and Mould Risk Calculator – The temperature factor fRsi = 1 − U·Rsi does not depend on... IT, EN, ES, FR, DE
• Carbon Intensity Calculator – Carbon intensity — tonnes of CO₂e per million of revenue — falls... IT, EN, ES, FR, DE
• Water Heater Sizing Calculator: Hot Water Demand, Tank and Power – Calculate the hot water demand in the peak hour and size the... IT, EN, ES, FR, DE

energia-solare [see all]

• Photovoltaic (PV) Array Sizing Calculator – Dimensiona il tuo impianto fotovoltaico: potenza kWp, numero di moduli, superficie occupata,... IT, EN, ES, FR, DE
• Solar Water Heater Sizing Calculator (DHW) – Dimensiona il tuo impianto solare termico ACS: superficie collettori, volume boiler, energia... IT, EN, ES, FR, DE

Finanza [see all]

• 1099 vs W-2 Calculator (Contractor or Employee) – How much should you charge as a 1099 to match a W-2?... IT
• Altman Z-Score Calculator: Bankruptcy Risk – Calculate a company's Altman Z-Score from balance sheet data and find out... IT, EN, ES, FR, DE
• Depreciation Calculator: Straight-Line Method and Book Value – Calculate depreciation with the straight-line method: annual and monthly amount, accumulated depreciation... IT, EN, ES, FR, DE
• Payday Loan APR Calculator – Calculate the real APR of a short-term or payday loan: convert the... IT, EN, ES, FR, DE
• ARPU Calculator (Average Revenue Per User) for SaaS – Calculate the ARPU (average revenue per user) of your SaaS: monthly and... IT, EN, ES, FR, DE
• Alimony & Spousal Support Calculator – How much will spousal support be? Estimate the amount and duration from... IT, EN, ES, FR, DE
• Child Support Calculator (Income Shares Model) – How much will child support be? Estimate with the income-shares model: parents'... IT, EN, ES, FR, DE
• Business Interruption Insurance Calculator: Sum to Insure – Calculate the sum to insure for business interruption: insurable gross profit, monthly... IT, EN, ES, FR, DE
• Key Person Insurance Calculator (Key Man Coverage) – How much key person insurance does your business need? Calculate the recommended... IT, EN, ES, FR, DE
• Umbrella Insurance Calculator (How Much Coverage You Need) – How much umbrella insurance do you need? Calculate the recommended coverage based... IT, EN, ES, FR, DE

Personal Finance [see all]

Mortgages, interest, pensions, investments and financial planning

• Effective Tax Rate Calculator: Marginal vs Effective – Calculate your effective tax rate from income and taxes: net income, total... IT, EN, ES, FR, DE
• Disability Insurance Needs Calculator (Income Protection) – How much disability insurance do you need? Calculate the monthly benefit to... IT, EN, ES, FR, DE
• Critical Illness Insurance Calculator: Cover You Need – Calculate the cover for a critical illness policy: debts, income during recovery,... IT, EN, ES, FR, DE
• Income Protection Insurance Calculator – Calculate the income protection insurance you need: monthly benefit to insure, share... IT, EN, ES, FR, DE
• Electric vs Petrol Car Cost Calculator – Electric or petrol car? Calculate and compare the total cost of ownership... IT, EN, ES, FR, DE
• Self-Insurance Calculator: Insure or Retain the Risk? – Compare insuring and self-insuring: expected loss, cost with policy, average savings and... IT, EN, ES, FR, DE
• 50/30/20 Budget Calculator – Apply the 50/30/20 rule to your monthly take-home pay: 50% needs, 30%... IT, EN, ES, FR, DE
• Wedding budget calculator: venue catering dress photographer flowers cost – Calculate your complete wedding budget: venue, catering per guest, dress, photographer, flowers,... IT, EN, ES, FR, DE
• Life Insurance Needs Calculator – Calculate how much life insurance coverage your family needs: income replacement, debts,... IT, EN, ES, FR, DE
• Coinsurance Calculator (Underinsurance / 80% Rule) – Calculate the payout with the coinsurance clause (80% rule): required amount, coverage... IT, EN, ES, FR, DE

Fisica [see all]

• Andrade Liquid Viscosity Temperature Calculator – Andrade 1930 liquid viscosity calculator μ=A·exp(B/T): water glycerol oil. Pirelli rheometry, Eni... IT, EN, ES, FR, DE
• How to calculate Cabibbo angle for quark mixing – Compute Cabibbo angle θ_C ≈ 13.04° for d-s quark mixing (Nicola Cabibbo... IT, EN, ES, FR, DE
• How to calculate vapor pressure with the Antoine equation – Compute vapor pressure log₁₀(P) = A - B/(T+C) with the Antoine equation... IT, EN, ES, FR, DE
• How to calculate stopping power with the Bethe-Bloch formula – Compute heavy charged particle stopping power with the Bethe-Bloch formula (1930-1933): -dE/dx... IT, EN, ES, FR, DE
• How to calculate Brayton cycle gas turbine efficiency – Compute thermal efficiency η = 1 - 1/r_p^((γ-1)/γ) of Brayton cycle (1872)... IT, EN, ES, FR, DE
• Cherenkov Radiation Frank-Tamm Calculator – Cherenkov radiation 1934 + Frank-Tamm 1937 Nobel 1958 calc: cos θ_C =... IT, EN, ES, FR, DE
• How to calculate Child-Langmuir space-charge-limited current – Compute space-charge-limited current density J and total current I via the Child-Langmuir... IT, EN, ES, FR, DE
• Prandtl-Glauert Compressibility Correction Calculator – Prandtl-Glauert 1922 + Glauert 1928 compressibility correction calc subsonic: c_p = c_p0/√(1-M²).... IT, EN, ES, FR, DE
• How to calculate Sommerfeld fine structure constant α – Compute Sommerfeld fine structure constant α = e²/(4πε₀ℏc) ≈ 1/137.036 from 1916.... IT, EN, ES, FR, DE
• How to calculate melting temperature with Lindemann criterion – Compute melting temperature T_m via Lindemann 1910 criterion: solid melts when ⟨u²⟩^(1/2)... IT, EN, ES, FR, DE

Fitness e Nutrizione [see all]

• Weight Loss Timeline Calculator: Calorie Deficit and Safe Rate – Calculate how long it takes to lose weight given a daily calorie... IT, EN, ES, FR, DE
• 1RM Calculator: Powerlifting Max Epley Brzycki — Italy – 1RM (one-rep max) calculator for powerlifting using Epley 1985, Brzycki 1993 formulas.... IT, EN, ES, FR, DE
• BMR & TDEE Calculator: Mifflin-St Jeor — Italy LARN – BMR and TDEE calculator using Mifflin-St Jeor 1990 formula. Italian LARN SINU... IT, EN, ES, FR, DE
• Italian running pace calculator with predictions – Compute Italian running pace: min/km, km/h, 5K/10K/half/marathon Riegel predictions. Italian FIDAL races.... IT, EN, ES, FR, DE
• Ideal Body Weight Calculator Devine Lorentz Robinson – Calculate Ideal Body Weight IBW with Devine 1974, Lorentz, Robinson 1983 plus... IT, EN, ES, FR, DE
• VO2max Calculator: Cooper Rockport ACSM — Italy – VO2max calculator using Cooper 1968 12-min test, Rockport 1-mile, Uth-Sørensen 2004 formulas.... IT, EN, ES, FR, DE
• Sleep Cycle Calculator: 90-Min Cycles Italy AIMS – Sleep cycle calculator with 90-min cycles: when to go to bed based... IT, EN, ES, FR, DE
• Heart rate zones calculator: Tanaka Karvonen 5 zones – Heart rate zones calculator Tanaka 2001 (208-0.7xage) and Karvonen 1957 with HRrest.... IT, EN, ES, FR, DE

geotecnica [see all]

• Soil Bearing Capacity Calculator (Terzaghi-Meyerhof) – Calcola la capacità portante ultima e ammissibile di una fondazione superficiale con... IT, EN, ES, FR, DE

idraulica [see all]

• Pipe Friction Loss Calculator (Darcy-Weisbach) – Calcola la perdita di carico distribuita ΔH_f in una tubazione con la... IT, EN, ES, FR, DE
• Hydraulic Jump Calculator (Bélanger, Energy Dissipation) – Calcola profondità coniugate, velocità e perdita di carico di un salto idraulico... IT, EN, ES, FR, DE

Immobiliare [see all]

• ARM vs Fixed Calculator: Adjustable or Fixed Rate Mortgage – Compare an ARM (adjustable-rate) and a fixed-rate mortgage: initial payment, saving in... IT, EN, ES, FR, DE
• BRRRR Calculator: Real Estate Investing – Calculate your BRRRR strategy (Buy, Rehab, Rent, Refinance, Repeat): how much capital... IT, EN, ES, FR, DE
• Mortgage Buydown Calculator: 2-1 Reduced Payment and Cost – Calculate a mortgage buydown (2-1): reduced payment in the first two years,... IT, EN, ES, FR, DE
• Cash-on-Cash Return Calculator: Rental Cash Flow – Calculate the cash-on-cash return and cash flow of a rental property: rent... IT, EN, ES, FR, DE
• Cash-Out Refinance Calculator: New Loan, LTV and Payment – Calculate a cash-out refinance: new loan (balance + cash), LTV, new monthly... IT, EN, ES, FR, DE
• Rent vs Buy Calculator: Should You Buy a Home? – Find out whether it is better to buy or rent a home:... IT, EN, ES, FR, DE
• Mortgage Refinance Savings Calculator – Find out if refinancing your mortgage is worthwhile: new monthly payment, monthly... IT, EN, ES, FR, DE
• Closing Costs Calculator: Home Purchase Extra Costs – Calculate the closing costs of a home purchase: taxes, notary, agency, appraisal.... IT, EN, ES, FR, DE
• Debt Yield Calculator (Commercial Real Estate) – Calculate the debt yield of a commercial property: NOI divided by the... IT, EN, ES, FR, DE
• DSCR Calculator (Debt Service Coverage Ratio) – Calculate the DSCR of your rental property: net operating income, debt coverage,... IT, EN, ES, FR, DE

Informatica [see all]

• RAID Capacity Calculator: Usable Space, Efficiency and Redundancy – Calculate the usable capacity of a RAID array: from number of disks,... IT, EN, ES, FR, DE
• AI Energy & CO₂ Footprint Calculator – Calculate how much energy and CO₂ your AI usage produces: kWh per... IT, EN, ES, FR, DE
• Cloud Cost Calculator (FinOps): Savings and Optimization – Estimate how much you can save on cloud costs from monthly spend,... IT, EN, ES, FR, DE
• AI API Cost Calculator – Calculate how much an AI (LLM) API costs based on input/output tokens,... IT, EN, ES, FR, DE
• Technical Debt Cost Calculator – Calculate how much technical debt costs you every year and when it... IT, EN, ES, FR, DE
• Downtime Cost & SLA Calculator – Calculate the cost of downtime and the value of the SLA: from... IT, EN, ES, FR, DE
• Software Migration Cost Calculator – Calculate the real cost of a software migration: licences and consulting are... IT, EN, ES, FR, DE
• E-Discovery Cost Calculator – How much does e-discovery cost? Cost is decided upstream, not downstream: every... IT, EN, ES, FR, DE
• Cloud Egress Cost Calculator – Calculate the cloud egress cost (data transfer out) from GB, price per... IT, EN, ES, FR, DE
• AI Image Generation Cost Calculator – Calculate the real cost of generating images with AI: cost per usable... IT, EN, ES, FR, DE

Ingegneria [see all]

• Process Capability Calculator: Cp, Cpk & Sigma Level – Calculate the Cp and Cpk of a manufacturing process from the specification... IT, EN, ES, FR, DE
• Bolt Torque Calculator: Preload, K-Factor and Percent of Yield – Calculate the preload (clamping force) of a bolt from the torque, the... IT, EN, ES, FR, DE
• Equivalent Annual Cost (EAC) Calculator: Compare Assets and Economic Life – Calculate the equivalent annual cost (EAC) of an asset: purchase, salvage value,... IT, EN, ES, FR, DE
• Sling Load Calculator – The angle is lifting's invisible multiplier: two legs at 45° from vertical... IT, EN, ES, FR, DE
• Welding Cost Calculator – In a typical welding metre labour weighs almost 90% and the wire... IT, EN, ES, FR, DE
• 3D Printing Cost Calculator – In the typical part the filament is worth 3.00 out of a... IT, EN, ES, FR, DE
• Product Recall Cost Calculator – Estimate recall cost from the scope, not from the defect. The amplification... IT, EN, ES, FR, DE
• Welding Heat Input Calculator – Volts and amperes are on the display, but heat input is decided... IT, EN, ES, FR, DE
• Ground Bearing Pressure Calculator – During slewing a single outrigger can carry two thirds of the entire... IT, EN, ES, FR, DE
• Machine Hour Rate Calculator – Depreciation accrues with the calendar, not with the work: every productive hour... IT, EN, ES, FR, DE

ingegneria-strutturale [see all]

• Euler Buckling Load Calculator (Column Stability) – Calcola il carico critico di instabilità P_cr di una colonna con la... IT, EN, ES, FR, DE
• Wind Load Calculator on Buildings (Eurocode 1) – Calcola la pressione del vento sugli edifici secondo Eurocodice 1 e NTC... IT, EN, ES, FR, DE

Lavoro [see all]

• Break-Even ROAS Calculator: Profitable Advertising – Calculate the break-even ROAS and target ROAS from your margins: find the... IT, EN, ES, FR, DE
• Burn Multiple Calculator: SaaS Capital Efficiency – Calculate your SaaS startup's Burn Multiple: cash burned divided by net new... IT, EN, ES, FR, DE
• Burn Rate & Runway Calculator for Startups – Calculate your startup's burn rate and runway: net and gross burn, months... IT, EN, ES, FR, DE
• PPC & Google Ads Campaign Calculator (ROI) – Plan a PPC or Google Ads campaign: from budget and CPC estimate... IT, EN, ES, FR, DE
• Churn & Retention Rate Calculator – Calculate customer churn rate and retention: churn, retention, average customer lifetime and... IT, EN, ES, FR, DE
• Cost Per Hire Calculator – Calculate the cost per hire with the SHRM formula: internal + external... IT, EN, ES, FR, DE
• Workplace Injury Cost Calculator – Calculate the real cost of workplace injuries for the company: direct costs... IT, EN, ES, FR, DE
• Absenteeism Cost Calculator – Calculate the annual cost of absenteeism: the direct cost of days lost... IT, EN, ES, FR, DE
• Employer of Record (EOR) Cost Calculator – Calculate the real cost of hiring abroad through an Employer of Record... IT, EN, ES, FR, DE
• True Cost of an Employee Calculator – Calculate what an employee really costs the company beyond the gross salary:... IT, EN, ES, FR, DE

Matematica [see all]

• Dijkstra Shortest Path Algorithm Calculator – Dijkstra algorithm for shortest paths in weighted graphs: single-source, point-to-point, shortest-path tree... IT, EN, ES, FR, DE
• Stirling's Approximation Calculator – Compute n! via Stirling's formula n! ~ sqrt(2 pi n)(n/e)^n and the... IT, EN, ES, FR, DE
• Circle Sector, Arc, Segment Area Calculator – Compute circle sector area A = ½r²θ, arc length L = rθ,... IT, EN, ES, FR, DE
• Eigenvalues Calculator (2×2 and 3×3) – Compute eigenvalues and eigenvectors of 2×2 and 3×3 matrices in closed form.... IT, EN, ES, FR, DE
• Triangle Centroid, Incenter, Circumcenter, Orthocenter – Compute the four classical triangle centers: centroid G, incenter I, circumcenter O... IT, EN, ES, FR, DE
• Circumcircle and Incircle Calculator (Triangle, R, r, Euler) – Triangle circumcircle radius R and incircle radius r calculator from 3 sides:... IT, EN, ES, FR, DE
• Binomial Coefficient Calculator (Pascal, Multinomial) – Binomial coefficient calculator C(n,k) = n!/(k!(n-k)!), Pascal triangle rows, central coefficients, multinomial... IT, EN, ES, FR, DE
• Prime Counting Calculator pi(n) (Sieve, Li, Riemann) – Prime counting function pi(n) calculator: exact Eratosthenes sieve, asymptotic approximations n/ln(n), Li(n),... IT, EN, ES, FR, DE
• Apery Constant Calculator zeta(3) (Irrational) – Apery constant zeta(3) = 1.2020569031 calculator: direct series, accelerated Apery formula geometric... IT, EN, ES, FR, DE
• Catalan Constant G Calculator = 0.9159655... – Catalan constant G = 0.9159655941 calculator: direct series, Ramanujan accelerated, Broadhurst BBP... IT, EN, ES, FR, DE

materiali [see all]

• Young Modulus Calculator (Tensile Test ISO 6892 / ASTM E8) – Calcola il modulo di Young E, la tensione σ, la deformazione ε... IT, EN, ES, FR, DE
• Fatigue Strength Calculator (Basquin, Wöhler, Goodman) – Calcola la vita a fatica di un componente metallico (curva di Wöhler... IT, EN, ES, FR, DE

meccanica [see all]

• Gear Ratio, Torque and Power Calculator – Calcola rapporto di trasmissione, coppia in uscita, potenza e velocità periferica di... IT, EN, ES, FR, DE

Pensioni e Previdenza [see all]

• Barista FIRE Calculator (Semi-Retirement) – Calculate your Barista FIRE number: how much capital you need if a... IT, EN, ES, FR, DE
• Long-Term Care Cost & Insurance Needs Calculator – How much does long-term care cost? Calculate the total cost (with healthcare... IT, EN, ES, FR, DE
• Retirement Drawdown Calculator – Calculate how many years your retirement savings will last given an annual... IT, EN, ES, FR, DE
• FIRE Number & Financial Independence Calculator – Calculate your FIRE number: the capital you need to be financially independent,... IT, EN, ES, FR, DE
• Annuity Payout Calculator: Income from a Lump Sum – Calculate how much monthly income a lump sum generates over a given... IT, EN, ES, FR, DE
• Safe Withdrawal Rate Calculator: 4% Rule and Retirement Withdrawal – Calculate the safe withdrawal rate (4% rule): how much to withdraw each... IT, EN, ES, FR, DE
• Lump Sum vs Annuity Calculator (Pension Buyout) – Lump sum or monthly pension? Calculate the present value of the pension... IT, EN, ES, FR, DE
• Savings Rate Calculator (and Years to FIRE) – Calculate your savings rate and how many years to reach financial independence... IT, EN, ES, FR, DE
• Retirement Income Replacement Calculator: Pension Income and Gap – Calculate your retirement replacement ratio: how much of your current income the... IT, EN, ES, FR, DE
• Italian Survivor Pension Calculator: 60-100% Spouse Children – Calculate Italian INPS survivor pension: 60% spouse, 80% with 1 child, 100%... IT, EN, ES, FR, DE

Health [see all]

BMI, calories, biological age, dosages and vital parameters

• Italian Pregnancy Weight Gain Calculator IOM – Italian pregnancy weight gain calculator IOM 2009: BMI underweight 12.5-18 kg, normal... IT, EN, ES, FR, DE
• IVF Cost Calculator – Calculate the real cost of in vitro fertilization (IVF): not just the... IT, EN, ES, FR, DE
• Dental Implant Cost Calculator – Calculate the real cost of a dental implant: not just the titanium... IT, EN, ES, FR, DE
• LASIK Cost Calculator (Laser Eye Surgery) – Calculate the cost of LASIK surgery and in how many years it... IT, EN, ES, FR, DE
• Health Insurance Out-of-Pocket Cost Calculator – Calculate your real out-of-pocket cost with health insurance: deductible + coinsurance +... IT, EN, ES, FR, DE
• Hair Transplant Cost Calculator – Calculate the real cost of a hair transplant: not just the advertised... IT, EN, ES, FR, DE
• Caffeine half-life calculator: 5h adult EFSA Italy – Caffeine half-life calculator: 5h average adult (EFSA 2015), pregnancy 9-15h reduced CYP1A2,... IT, EN, ES, FR, DE
• A1C to Average Glucose Calculator – Convert your HbA1c into estimated average glucose (eAG) in mg/dL and mmol/L... IT, EN, ES, FR, DE
• NNT Calculator: Number Needed to Treat & Risk Reduction – Calculate the NNT (Number Needed to Treat) from the control and treated... IT, EN, ES, FR, DE
• Diagnostic Test Calculator: Sensitivity, Specificity, PPV and NPV – Calculate the real predictive value of a diagnostic test: from sensitivity, specificity... IT, EN, ES, FR, DE

Statistica [see all]

• A/B Test Calculator: Statistical Significance – Is your A/B test statistically significant or just chance? Enter visitors and... IT, EN, ES, FR, DE
• One-Way ANOVA Calculator (k Groups, F-test, eta^2) – One-way ANOVA calculator for 2-4 independent groups from summary statistics (means, SDs,... IT, EN, ES, FR, DE
• Call Center Staffing Calculator: Agents & Service Level (Erlang C) – Calculate how many agents a call center needs with the Erlang C... IT, EN, ES, FR, DE
• Chi-Square Calculator: goodness-of-fit, p-value, critical – Compute χ² goodness-of-fit statistic, PDF density, cumulative CDF, p-value and critical value... IT, EN, ES, FR, DE
• Correlation Coefficient Calculator: Pearson, Spearman, regression – Compute Pearson correlation r, Spearman rho, covariance and simple linear regression from... IT, EN, ES, FR, DE
• Pearson Correlation Calculator r (Linear) – Pearson correlation r calculator for linear relationships: covariance, standard deviation, comparison with... IT, EN, ES, FR, DE
• Spearman Correlation Calculator (rho, Rank-Based) – Spearman rank correlation rho calculator: comparison with Pearson and Kendall tau, significance... IT, EN, ES, FR, DE
• Cosine Similarity Calculator (NLP, ML, Recommender) – Cosine similarity calculator between vectors: cos(theta) = (A.B)/(||A|| ||B||), cosine distance, applications... IT, EN, ES, FR, DE
• Covenant Headroom Calculator – Covenant headroom is not measured in percentage points but in standard deviations... IT, EN, ES, FR, DE
• Hamming Distance and Error-Correcting Codes Calculator – Compute the Hamming distance between equal-length strings, minimum code distance analysis and... IT, EN, ES, FR, DE

studio [see all]

• Stern-Brocot Tree Calculator (Rational Numbers) – Stern-Brocot tree calculator: L/R path from 1/1 to p/q, level generation, ancestors,... IT, EN, ES, FR, DE
• Polygon Area Calculator (Gauss Shoelace Formula) – Polygon area calculator using Gauss Shoelace formula (surveyor): computes area, perimeter, centroid,... IT, EN, ES, FR, DE
• Triangle Area Calculator (Heron and other formulas) – Compute the area of a triangle with 4 methods: Heron's formula, base·height,... IT, EN, ES, FR, DE
• Latent Heat Calculator: Fusion, Vaporization, Q = m·L – Compute latent heat of fusion and vaporization Q = m·L, mass involved... IT, EN, ES, FR, DE
• Specific Heat Calculator: Q = m·c·ΔT (mass, heat, temperature) – Specific heat calculator: Q=m·c·ΔT. Find heat, mass, c or ΔT. Water (4186),... IT, EN, ES, FR, DE
• Heat Capacity Calculator: Q = m·c·ΔT, mixing, equilibrium T – Compute heat transferred Q = m·c·ΔT, temperature change, mass and equilibrium temperature... IT, EN, ES, FR, DE
• Cylinder Calculator: Volume, Surface, Hollow Tube, Oblique – Right cylinder calculator: volume V = pi r^2 h, lateral and total... IT, EN, ES, FR, DE
• Huffman Code Calculator (Optimal Prefix Coding) – Huffman coding calculator: binary tree, codebook, average length, Shannon entropy, efficiency, ASCII... IT, EN, ES, FR, DE
• Gini Coefficient Calculator (Inequality, Lorenz Curve) – Gini coefficient calculator for distributional inequality: sample values, Lorenz curve, cumulative frequencies,... IT, EN, ES, FR, DE
• Coefficient of Restitution Calculator – Compute the coefficient of restitution from velocities or bounce heights. Bounce series... IT, EN, ES, FR, DE

termodinamica [see all]

• Rankine Cycle Efficiency Calculator (Steam) – Calcola rendimento ideale, reale e Carnot di un ciclo Rankine di vapore... IT, EN, ES, FR, DE

termotecnica [see all]

• Refrigeration COP Calculator (Reverse Carnot Cycle) – Calcola COP ideale di Carnot, COP reale e EER equivalente di un... IT, EN, ES, FR, DE
• Thermal Bridge Heat Loss Calculator (ψ·L·ΔT, EN ISO 14683) – Calcola la dispersione di calore attraverso un ponte termico lineare (Q =... IT, EN, ES, FR, DE

Utilità [see all]

• Airbnb vs Long-Term Rental Calculator – In the typical case short-term matches the long-term rent at 52% occupancy:... IT, EN, ES, FR, DE
• Trade Credit Insurance Calculator (Bad Debt) – Calculate whether trade credit insurance is worthwhile: compare the premium with the... IT, EN, ES, FR, DE
• Bid/No-Bid Calculator – Bid costs are paid even when you lose: below the break-even hit... IT, EN, ES, FR, DE
• Advertising Budget Calculator: How Much to Spend to Reach Your Customer Goal – Calculate how much advertising budget you need to reach a conversions goal... IT, EN, ES, FR, DE
• Circle Calculator: area, circumference, arc, sector – Calculate area, circumference, radius, diameter, arc length, sector and segment area of... IT, EN, ES, FR, DE
• Combinatorics Calculator: permutations, combinations, factorial – Calculate permutations (nPr), combinations (nCr), factorial (n!), binomial coefficient and arrangements with... IT, EN, ES, FR, DE
• Customer Concentration Calculator – How exposed are you to your largest customer? Concentration is measured on... IT, EN, ES, FR, DE
• Unit Price Comparison Calculator – Compare two products by price per kg, litre or unit and find... IT, EN, ES, FR, DE
• Base Conversion Calculator (Any Base 2-36) – Convert numbers between any pair of bases from 2 to 36. Supports... IT, EN, ES, FR, DE
• Home Insurance Coverage Calculator: Rebuild Value and Underinsurance – Check whether your home insurance is adequate: calculate the rebuild cost, the... IT, EN, ES, FR, DE