21 calculators, and counting

Free Online Calculators — Finance, Health & Units

Work out loan EMIs, percentages, GST, BMI, age, SIP returns and unit conversions — everyday calculators that answer the moment you finish typing.

Runs on your device
No uploads
Free, no sign-up
Works on any device

Most used

Where most people start in calculators.

EMI CalculatorCalculate your monthly loan EMI, total interest and total payable from the loan amount, interest rate and tenure — instant results, all in your browser.Percentage CalculatorWork out percentages the easy way — what is X% of Y, X is what percent of Y, and percentage increase or decrease — all in your browser, instantly.GST / Tax CalculatorAdd or remove GST, VAT or sales tax from an amount — enter a rate or pick a preset and see the tax and net or gross total instantly, all in your browser.Age CalculatorFind your exact age in years, months and days from your date of birth — plus a countdown to your next birthday, all calculated in your browser.

All calculators

21

EMI CalculatorCalculate your monthly loan EMI, total interest and total payable from the loan amount, interest rate and tenure — instant results, all in your browser.Percentage CalculatorWork out percentages the easy way — what is X% of Y, X is what percent of Y, and percentage increase or decrease — all in your browser, instantly.Discount CalculatorCalculate the sale price and how much you save from a price and discount percentage — or work out the discount from the original and sale price, all in your browser.BMI CalculatorCalculate your Body Mass Index from your height and weight in metric or imperial units — see your BMI category and healthy weight range, all in your browser.Age CalculatorFind your exact age in years, months and days from your date of birth — plus a countdown to your next birthday, all calculated in your browser.Date Difference CalculatorCalculate the number of days, weeks and months between two dates, or add and subtract days from a date — all in your browser with no upload.GST / Tax CalculatorAdd or remove GST, VAT or sales tax from an amount — enter a rate or pick a preset and see the tax and net or gross total instantly, all in your browser.Tip CalculatorWork out the tip and total on a bill, and split it between any number of people — see the per-person amount instantly, all in your browser.Interest CalculatorCalculate simple and compound interest from a principal, rate and time — compare the two and choose the compounding frequency, all in your browser.Unit ConverterConvert between units of length, weight, temperature, volume, area and speed — pick a category and see the result instantly, all in your browser.Calorie CalculatorEstimate your daily calorie needs (TDEE) from your age, height, weight and activity level using the Mifflin–St Jeor formula, all in your browser.SIP CalculatorEstimate the maturity value of a monthly SIP investment from the amount, expected return and duration — see invested vs. returns, all in your browser.Salary to Hourly CalculatorConvert a salary between yearly, monthly, weekly, daily and hourly pay based on your hours per week and weeks per year, all in your browser.Hours CalculatorWork out the hours and minutes between a start and end time (minus breaks) as HH:MM and decimal hours, or add and subtract durations, all in your browser.Fuel Cost CalculatorCalculate trip fuel cost, cost per km, and monthly/annual fuel spend from your mileage and fuel price — supports km/L and L/100km, all in your browser.CGPA & Grade CalculatorConvert marks to percentage and grade, or calculate your weighted CGPA from subject credits and grade points — supports 10-point and 4-point scales.Loan Eligibility CalculatorFind the maximum loan amount you are eligible for based on your income, existing EMIs and FOIR — with an EMI affordability reverse mode, all in your browser.Currency ConverterConvert between 150+ currencies using up-to-date exchange rates — pick source and target, enter an amount and see the result instantly, all in your browser.FD / RD CalculatorCalculate the maturity value and interest earned on a fixed deposit or recurring deposit — choose compounding frequency, all in your browser.Retirement CalculatorEstimate the corpus you need for retirement and how much to save each month — factor in inflation, expected returns and years to retire, all in your browser.Speed / Distance / TimeSolve for speed, distance or time given the other two — supports km/h, mph, m/s and multiple time formats, all calculated instantly in your browser.

What people use these for

Start from the job you need done.

Work out a loan repaymentGet the monthly EMI, total interest and total payable from the amount, rate and tenure before you commit.EMI Calculator Add or remove taxApply GST, VAT or sales tax to an amount, or work backwards from a gross figure to the net.GST / Tax Calculator Check a discountSee the sale price and the actual saving, or derive the discount percentage from before and after prices.Discount Calculator Plan an investmentEstimate what a monthly SIP grows into, and how much of that is your money versus returns.SIP Calculator Find an exact ageGet age in years, months and days from a date of birth, plus the countdown to the next birthday.Age Calculator Convert a salaryMove between yearly, monthly, weekly and hourly pay using your real hours per week.Salary to Hourly Calculator

About these calculators

Some numbers you need once and immediately: the EMI on a loan you're considering, what 18% GST adds to a quote, how much a discount actually saves, what a salary works out to per hour, how old someone is to the day.

Each calculator here takes the few inputs it genuinely needs and answers as you type — no sign-up, no ads between you and the result, and no sending your salary or loan details to anyone.

Frequently asked questions

Are the results accurate enough to rely on?

The maths uses the standard formulas — reducing-balance EMI, Mifflin–St Jeor for calories, compound interest with your chosen frequency — so results match what a bank or textbook would produce. They're estimates for planning, not a formal quote or medical advice.

Is my financial information stored?

No. Every calculation runs in your browser; salary, loan and health figures are never transmitted or saved anywhere.

Why does my bank's EMI differ slightly from this?

Lenders add processing fees, insurance or a different day-count convention, and may round differently. The principal-plus-interest figure here is the baseline before those extras.

Which currencies do these work with?

The calculators are currency-agnostic — the arithmetic is identical whatever you're counting. Only the currency converter needs actual exchange rates.

Do the calculators handle the Indian numbering system?

Yes, where it matters. GST presets, EMI and the number-to-words converter all support lakhs and crores alongside the international format.

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