Free Unit Converter

Convert length, weight, temperature, and more — instantly

About Unit Converter

All the unit conversions that come up regularly — in one place, with real results. Seven categories: length, weight, temperature, volume, area, speed, and digital storage. Temperature uses the actual formulas (not naive linear factors), so Celsius, Fahrenheit, and Kelvin all convert correctly. Data sizes handle both decimal (MB, GB) and binary (MiB, GiB) units because yes, they're different and it matters. Type a value and the result updates immediately — everything runs locally in your browser, no server needed.

How it works

1

Pick a category

Choose from length, weight, temperature, volume, area, speed, or data size.

2

Type a value

Enter the amount and choose the source and target units.

3

Read the result

The converted value appears instantly — common units are preset so you're usually one or two clicks away.

Frequently asked questions

Which unit categories are covered?

Length, weight, temperature, volume, area, speed, and digital data size — each with the metric and imperial units people actually use day to day.

How accurate are the conversions?

Factors use exact internationally agreed definitions; results are shown with sensible rounding and full precision is kept internally.

Does temperature use the right formulas?

Yes — Celsius, Fahrenheit, and Kelvin convert through their actual formulas, not a linear approximation like other units.

Is it free?

Yes, no limits — everything runs in your browser.