All Calculators

The library is organised into 8 categories. Finance is the largest and covers loans, EMI, investing and tax; Mathematics runs from basic arithmetic to geometry and algebra; Health & Fitness covers BMI, calories and cycle tracking. The rest — Conversion, Science, Date & Time, Statistics and Utility — handle unit conversion, physics and chemistry, date arithmetic, data summaries and everything that fits nowhere else.

If you know roughly what you need but not which tool, each category page opens with a short list matching common jobs to the calculator that does them. If you already know the name, the search box below is faster than scrolling.

Every calculator runs entirely in your browser, so nothing you type is sent to us or stored. Each one also explains the formula it applies and works through an example, so you can check the result rather than take it on trust.