Calculators & Utilities

Everyday calculators and converters: working out an exact age, checking a BMI, converting units or currency, running percentage and scientific calculations, and generating random numbers for a draw or a sample.

The arithmetic is trivial, so the reason to keep it in the browser is partly reliability and partly the inputs. A date of birth, a salary, a weight, a loan balance — these are personal, and there is no reason to send them anywhere to be divided or multiplied. Everything here computes locally, answers instantly, and works with no connection. The one exception is the currency converter, which must fetch published exchange rates because they simply do not exist on your device; the amounts you type still stay in your browser.