Unit Converter
Convert common measurements between metric, imperial and digital units with browser-native formulas.
Everyday measurements
Convert distances, recipe measurements, room sizes, travel speeds and temperatures without opening a spreadsheet.
Metric and imperial
Switch between common SI, US customary and imperial units including meters, feet, miles, pounds, ounces, liters and gallons.
Private local processing
The formulas run in the page with JavaScript only. There is no upload endpoint, API dependency or server-side conversion job.
Frequently asked questions
Is this unit converter free?
Yes. The Convertr unit converter is free to use and does not require an account.
Are values uploaded to the server?
No. Unit conversion uses first-party JavaScript formulas in your browser. The values you type are not uploaded.
Which categories are supported?
The converter supports length, weight and mass, temperature, area, volume, speed, digital data and time units.
Can I convert metric and imperial units?
Yes. Common metric and imperial units are included, such as meters, feet, miles, kilograms, pounds, liters, gallons, square meters and acres.