Free Forever
No hidden costs, no signup required
The Painless Way
Free Online Calculators – Your All-in-One Calculation Hub
Financial, mortgage, health, tax, math, and more — all free, no signup, instant results on any device. The simple, fast alternative to Google Calculator.
Instant Results
Calculate and get answers in seconds
Works Everywhere
Mobile-friendly, works on any device
Learn & Apply
Guides show you how to use your results
Browse Calculator Categories
10 categories, 44+ free calculators — pick the tools you need
Financial Calculators
Make smarter money decisions in seconds. Loan payments, compound interest, investment returns, and debt payoff — all calculated instantly.
Loan CalculatorInterest CalculatorInvestment ReturnSavings GoalDebt Payoff
Open Financial CalculatorsMortgage Calculators
Know your home costs before you sign. Monthly payments, refinance savings, affordability limits, and full amortization schedules.
Monthly PaymentRefinance CalculatorAffordabilityDown PaymentAmortization
Open Mortgage CalculatorsInsurance Calculators
Find the right coverage without the guesswork. Estimate life, auto, health, and home insurance needs based on your situation.
Life InsuranceCar InsuranceHealth InsuranceHome Insurance
Open Insurance CalculatorsTax & VAT Calculators
Stop overpaying — know exactly what you owe. VAT, income tax, capital gains, and sales tax computed in seconds.
VAT CalculatorIncome TaxCapital Gains TaxSales Tax
Open Tax CalculatorsPayroll Calculators
Accurate pay, every payday. Convert salary to hourly, calculate take-home pay, overtime, and bonus tax amounts.
Salary CalculatorHourly WageTake-Home PayOvertimeBonus Tax
Open Payroll CalculatorsRetirement Calculators
Plan today, retire comfortably tomorrow. Project savings growth, 401(k) matching, pension income, and your FIRE number.
Retirement Savings401(k) CalculatorPension CalculatorEarly RetirementSocial Security
Open Retirement CalculatorsHealth & Fitness Calculators
Know your numbers, transform your body. TDEE, BMI, body fat, calories, macros, and ideal weight — science-based, jargon-free.
TDEE CalculatorBMI CalculatorCalorie CalculatorMacrosIdeal WeightWater Intake
Open Health CalculatorsMath Calculators
From basic arithmetic to complex equations. Fractions, square roots, averages, primes, ratios, and percentages solved instantly.
Fraction CalculatorSquare RootAverage CalculatorPrime NumbersRatioPercentage
Open Math CalculatorsDate & Time Calculators
Plan ahead with precision. Calculate age, days between dates, working days, time zone differences, and countdowns.
Age CalculatorDate DifferenceTime Zone ConverterCountdown TimerWorking Days
Open Date CalculatorsConstruction & Unit Calculators
Built for builders, designers and engineers. Area, volume, concrete, roofing, paint, and unit conversions for any project.
Area & VolumeUnit ConverterConcrete CalculatorRoofing CalculatorPaint Calculator
Open Construction CalculatorsMost Popular Calculators
Jump straight to the most-used tools
Financial
Loan Calculator
Monthly payment, total interest, and amortization for any loan.
→MortgageMortgage Payment Calculator
Exact monthly mortgage payment including principal and interest.
→TaxVAT Calculator
Add or remove VAT from any amount for any rate worldwide.
→HealthTDEE Calculator
Total Daily Energy Expenditure with calorie targets for your goal.
→PayrollSalary Calculator
Convert annual salary to monthly, weekly, and hourly rates.
→Retirement401(k) Calculator
Project 401(k) balance at retirement with employer match.
→MathPercentage Calculator
What is X% of Y? Percentage change and more.
→DateAge Calculator
Exact age in years, months, and days from any birth date.
→Financial Calculators
Make smarter money decisions in seconds
Financial
Loan Calculator
Monthly payment, total interest, and payoff schedule for any loan.
→FinancialInterest Calculator
Simple and compound interest on savings or loans.
→FinancialInvestment Return Calculator
Future value of investments with regular contributions.
→FinancialSavings Goal Calculator
Monthly savings needed to reach any financial goal.
→FinancialDebt Payoff Calculator
Payoff date and total interest using avalanche or snowball method.
→Mortgage Calculators
Know your home costs before you sign
Mortgage
Monthly Payment Calculator
Exact mortgage payment breakdown for any home price and rate.
→MortgageRefinance Calculator
Compare your current mortgage vs a new rate to find real savings.
→MortgageAffordability Calculator
Maximum home price based on your income, debts, and down payment.
→MortgageDown Payment Calculator
How different down payments affect your monthly payment and PMI.
→MortgageAmortization Calculator
Full year-by-year payment schedule for your mortgage.
→Insurance Calculators
Find the right coverage without the guesswork
Insurance
Life Insurance Calculator
How much life insurance coverage you actually need.
→InsuranceCar Insurance Estimator
Estimate auto insurance cost based on vehicle and driving profile.
→InsuranceHealth Insurance Premium Calculator
Monthly premium estimate based on age, plan type, and family size.
→InsuranceHome Insurance Calculator
Annual home insurance estimate based on property value and location.
→Tax & VAT Calculators
Stop overpaying – know exactly what you owe
Tax
VAT Calculator
Add or remove VAT for any amount and rate worldwide.
→TaxIncome Tax Calculator
Federal income tax estimate using 2024 US tax brackets.
→TaxCapital Gains Tax Calculator
Short-term and long-term capital gains tax on investments.
→TaxSales Tax Calculator
Add sales tax to any purchase price for any rate.
→Payroll Calculators
Accurate pay, every payday
Payroll
Salary Calculator
Convert annual salary to monthly, weekly, and hourly rates.
→PayrollPaycheck Calculator
Total earnings from hours worked at any hourly rate.
→PayrollTake-Home Pay Calculator
Net pay after federal tax, Social Security, and Medicare.
→PayrollOvertime Calculator
Total pay including regular and overtime hours at 1.5x rate.
→PayrollBonus Tax Calculator
Tax withheld from your bonus using the 22% flat rate method.
→Retirement Calculators
Plan today, retire comfortably tomorrow
Retirement
Retirement Savings Calculator
Project your retirement nest egg with monthly contributions and growth.
→Retirement401(k) Calculator
Balance at retirement with employer match and contribution rate.
→RetirementPension Calculator
Defined benefit pension income estimate at retirement age.
→RetirementEarly Retirement Calculator
Your FIRE number — how much you need to retire early.
→RetirementSocial Security Estimator
Monthly Social Security benefit estimate based on earnings history.
→Health & Fitness Calculators
Know your numbers, transform your body
Health
TDEE Calculator
Total Daily Energy Expenditure and calorie targets for your goal.
→HealthBMR Calculator
Basal Metabolic Rate — calories burned at complete rest.
→HealthProtein Calculator
Daily protein needs based on weight, goal, and activity.
→HealthIF Window Calculator
Eating and fasting windows for 16:8, 18:6, OMAD, and 5:2.
→HealthCreatine Water Calculator
Extra daily water needed when supplementing with creatine.
→HealthCalorie Goal Suggester
Personalized daily calorie and macro targets for your goal.
→Math Calculators
From basic arithmetic to complex equations
Math
Fraction Calculator
Add, subtract, multiply, and divide fractions with simplified results.
→MathSquare Root Calculator
Square root, cube root, and nth root of any number.
→MathAverage Calculator
Mean, median, mode, and range for any set of numbers.
→MathPrime Number Calculator
Check if a number is prime and find its prime factorization.
→MathRatio Calculator
Simplify ratios and find equivalent ratios instantly.
→MathPercentage Calculator
X% of Y, percentage change, what % is X of Y.
→Date & Time Calculators
Plan ahead with precision
Date
Age Calculator
Exact age in years, months, and days from any birth date.
→DateDate Difference Calculator
Days, weeks, and months between any two dates.
→DateTime Zone Converter
Convert any time across major global time zones instantly.
→DateCountdown Timer
Days, hours, minutes until any future date or event.
→DateWorking Days Calculator
Business days between two dates, excluding weekends.
→Construction & Unit Calculators
Built for builders, designers and engineers
Construction
Area & Volume Calculator
Area and volume for rectangles, circles, triangles, and cylinders.
→ConstructionUnit Converter
Length, weight, temperature, and volume unit conversions.
→ConstructionConcrete Calculator
Cubic yards of concrete for slabs, footings, and columns.
→ConstructionRoofing Calculator
Roof area and materials needed including waste factor.
→ConstructionPaint Calculator
Gallons of paint needed for any room based on dimensions.
→Latest Guides & Answers
Learn how to apply your calculations correctly
Guide
What Is BMR? A Simple Guide for Beginners
Learn what Basal Metabolic Rate means and why it matters for your health goals, explained in simple terms anyone can understand.
→GuideBMR vs TDEE: What's The Difference?
Understand the key differences between BMR and TDEE, and learn which number you should actually use for your diet planning.
→Q&AWhat Is A Good BMR For My Age and Weight?
Find out what BMR ranges are normal for your age, sex, and body size, and whether your metabolism is healthy.
→Q&A7 Signs Your Metabolism Has Slowed Down (And What To Do)
Recognize the warning signs that your metabolism is slowing and learn practical steps to fix it before it affects your health.
→44+ free calculators, zero signup required
From loan payments and mortgage affordability to calories, tax, retirement, and unit conversions — all in one place, all free, all instant. No ads interrupting your work. Just the answer you need.