Calculators

Free calculators for age, finance, health, and tax.

Age CalculatorCalculate your exact age in years, months, and days, entirely in your browser.Percentage CalculatorFind a percentage of a number, what percent one number is of another, or percentage change.BMI CalculatorCalculate your Body Mass Index from height and weight, in metric or imperial units.EMI CalculatorCalculate your monthly loan EMI, total interest, and total payment.SIP CalculatorEstimate the future value of your monthly SIP investment.GST CalculatorAdd or remove GST from an amount at any tax rate, instantly.Loan CalculatorSee your full loan amortization schedule — principal vs. interest, year by year.Compound Interest CalculatorCalculate compound interest with annual, quarterly, or monthly compounding.

Financial and health calculations that matter for real decisions — a loan EMI, a SIP projection, a BMI check, a GST amount — are all built on formulas that are simple in principle but easy to get wrong by hand, especially when compounding or amortization is involved.

Each calculator here does one calculation properly: the exact formula used, worked examples with real numbers, and (for loans) a full year-by-year breakdown rather than just a single summary figure. Everything runs in your browser, so there's no upload, no account, and no delay — enter your numbers and see the result immediately.

Several of these calculators share the same underlying math: EMI, SIP, Loan, and Compound Interest all come down to compounding applied in different directions — borrowing, investing, or saving. If one of them doesn't quite match what you're trying to work out, a related calculator on that tool's page is usually the better fit.