Add GST to a price or take it out of a GST-inclusive amount, with the CGST and SGST/UTGST or IGST split. Uses the GST 2.0 rates.
Calculators
Free calculators for GST, EMI, interest, percentages, dates, health and unit conversions, with the formula explained on each page.
Find your exact age in years, months and days from your date of birth, plus your age in days, weeks and hours and the days to your next birthday.
Calculate X% of Y, what percent X is of Y, percentage increase or decrease, reverse percentages, adding or subtracting a percentage and percentage difference.
Work out the monthly EMI, total interest and total payment for a home, car or personal loan, with a full repayment schedule.
See your public IP address and look up the approximate location, ISP and other details of any IP address.
Count days, weeks, months and years between two dates, or add and subtract calendar time from a date.
Calculate adult BMI from metric or imperial measurements and compare WHO or Asian/Indian category cut-offs.
Estimate BMR, maintenance calories and daily calorie targets from adult measurements, activity and a weight goal.
Estimate basal metabolic rate with the Mifflin-St Jeor, Harris-Benedict and Katch-McArdle equations.
Estimate how a monthly SIP, optional step-up and starting lump sum could grow over time.
See how an investment grows with compound interest over time, with optional regular contributions.
Calculate the monthly payment, total interest and total cost of a loan for any amount, rate and term.
Calculate term, cumulative and target GPA from letter grades or percentages and credit hours on a 4.0 scale.
Convert percentage to CGPA or CGPA to percentage using CBSE’s 9.5 multiplier or your own formula.
Add or subtract hours, minutes and seconds. Find the difference between two times or add a duration to a start time.
Convert length, weight, area, volume, speed, data size and more between metric, imperial and US units.
Convert Celsius, Fahrenheit, Kelvin and Rankine readings or temperature differences.
Generate random numbers, flip coins or roll dice instantly in your browser.
Add your own options to a spinner wheel and let it pick one at random. Great for decisions, games and classroom activities.
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Calculators that show their working
Every calculator explains the formula it uses, so you can check the result yourself. Amounts are formatted with Indian digit grouping by default (for example 12,34,567) where that makes sense, and most finance calculators work with any currency.
Estimates, not advice
Results are estimates based on the numbers you enter. Banks and lenders may round differently, charge fees or use slightly different conventions, and tax rules change. For financial, tax or medical decisions, confirm the figures with your bank, accountant or doctor.
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