About UnitFlip

UnitFlip is a free unit converter for everyday and technical use. It covers length, weight, temperature, volume, speed, energy, digital storage, and many more measurement types, all in one consistent interface.

Who it is for

The site is built for anyone who needs a quick, trustworthy answer: cooks adjusting a recipe, travelers reading foreign road signs, students working through homework, engineers checking a spec, and shoppers comparing product dimensions. Whether you are on a phone or a laptop, the converter is the first thing on every page.

How it works

Conversions run entirely in your browser using a single, shared calculation engine. Each measurement type is defined against one base unit, and every other unit records its exact relationship to that base. Because the same data powers both the calculator and the written explanations, the numbers and the words always agree.

Accuracy and privacy

Conversion factors come from internationally recognized definitions rather than rounded approximations. You can read more on the methodology and sources pages. Because everything is calculated locally, the values you type are never sent to a server or saved to an account.