Calculators
Money, dates, health and everyday maths.
Loan Calculator
See the real cost of a loan — and what paying a little extra each month would save you.
Income Tax Calculator
Work out your Indian income tax under both regimes, and see which one costs you less.
Date Difference Calculator
How long between two dates — in years, months, days, and working days.
Time Difference Calculator
Hours between two times, including night shifts — with decimal hours for a timesheet.
Unit Converter
Length, weight, temperature, area, volume, speed, data and time — in one place.
Currency Converter
Convert between thirty currencies at the European Central Bank's published rates.
EMI Calculator
Work out a loan's monthly instalment, the total interest, and where every year's payment goes.
SIP Calculator
Project what a monthly investment could grow to, and how much of it is returns.
Compound Interest Calculator
See what savings grow to, and exactly how much of that is compounding rather than simple interest.
GST Calculator
Add GST to a price or pull it back out of one, split into CGST and SGST.
Discount Calculator
Work out what you actually pay, or what percentage a sale price really represents.
Tip Calculator
Split a bill with a tip, with the option to round the total to something payable.
BMI Calculator
Work out body mass index in metric or imperial, with an honest account of its limits.
Percentage Calculator
Work out percentages four ways — of a number, as a proportion, as a change, or added on.
Age Calculator
Find an exact age in years, months and days, plus the countdown to the next birthday.
About these calculators tools
Each of these answers one question exactly, shows the number immediately, and explains the formula underneath so you can check it rather than trust it. They cover the maths that comes up in ordinary life and ordinary work: what a loan actually costs each month, what a discount really saves, how a monthly investment compounds, how many days sit between two dates. Financial results are estimates for planning, not advice.