About Simple Calculators Online

Simple Calculators Online is a collection of 69 free, browser-based calculators and converters covering everyday money math, dates, unit conversions, health, math, school and sport. Every tool runs entirely on your device — there's no sign-up, no file upload, and nothing you type is sent anywhere.

How it works

Each calculator is a small, focused page that does one job well. Type in your numbers, press the button, and get an instant result — no ads blocking the tool, no account required.

Why it's free

The site is supported by Google AdSense Auto Ads, which is how we keep every tool free to use with no sign-up.

Who runs this

Simple Calculators Online is built and maintained by Usama Bin Tariq Qureshi.

Feedback

Found a bug, or want a calculator we don't have yet? Email [email protected].