100% free · Private · No sign-up

Numio

Free calculators for everyday life — finance, health, engineering, math.

Calculators by category

Accurate, instant results across every topic — pick a category to get started.

Converters, generators, formatters and validators — 194 browser-based tools that run entirely on your device.

No accounts, no tracking. Everything runs in your browser.

Answers update as you type — no waiting, no reloads.

Fully localized for a global audience.

Install Numio as an app and use it anywhere.