About

Utiliby is an independent project that builds free online calculators, converters and generators that are quick to use and respect your privacy.

What we do

We make small tools for everyday tasks, such as splitting a bill or converting a unit, and we try to make each one clear, fast and free of clutter. There are no accounts and no sign-up walls.

How our tools work

Our tools run in your browser. What you type into a calculator is processed on your own device and is not sent to us or stored. Each tool page explains the formula or method it uses, so you can check the result yourself.

Accuracy and corrections

We check each tool against worked examples that can be verified by hand. Our tools are for general information only and are not professional advice. If you spot a mistake or something unclear, please tell us and we will look into it.

Get in touch

Have a question or a tool you would like us to build? Visit our contact page.