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Free calculators for money, work, health, education and everyday decisions — each with the formula, a worked example and answers to the questions people actually ask.
Popular calculators
Browse all →- Age CalculatorDate & AgeCalculate your exact age in years, months and days plus total days and hours lived from your date of birth.Open calculator →
- BMI CalculatorHealth & FitnessCalculate your Body Mass Index from height and weight and see which category you fall into.Open calculator →
- Compound Interest CalculatorFinance & InterestCalculate compound interest, the final amount and the interest earned on any principal, for any compounding frequency.Open calculator →
- EMI CalculatorLoan & EMICalculate your monthly EMI, total interest payable and total payment for any loan, with a worked example and repayment summary.Open calculator →
- Income Tax CalculatorIndian TaxEstimate your FY 2025-26 income tax in either regime, with slab-wise tax, the 87A rebate, cess and the rate you pay.Open calculator →
- Length ConverterUnit ConvertersConvert metres, centimetres and kilometres to feet, inches, yards and miles with the exact factor for each pair.Open calculator →
Explore by category
All categories →- Unit ConvertersLength, weight, temperature, speed, area and number base converters.11 calculators
- Finance & InterestSimple and compound interest, inflation, returns and the time value of money.10 calculators
- Loan & EMIEMI, tenure, eligibility, prepayment and amortization calculators for every kind of loan.10 calculators
- InvestmentSIP, lumpsum, CAGR, XIRR, IRR and portfolio return calculators for investors.10 calculators
- Indian TaxIncome tax, GST, TDS, capital gains and tax-saving calculators for Indian taxpayers.10 calculators
- Salary & CareerCTC to in-hand, PF, gratuity, increment and wage calculators for employees.10 calculators
- Math & ArithmeticPercentage, fraction, average, LCM, HCF and other everyday math calculators.10 calculators
- Health & FitnessBMI, BMR, TDEE, calorie, body fat and target heart rate calculators.10 calculators
- Business & StartupMargin, break-even, CAC, LTV, runway and business valuation calculators.10 calculators
- Date & AgeAge, date difference, working days, countdown and time duration calculators.9 calculators
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- Understand the calculationEvery page shows the formula, a worked example, the assumptions behind it and answers to the questions people ask.
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