Unit Converters
One converter for everyday and technical units — pick a category, type a value and see the result instantly.
- Your data never leaves your device
- 100% free
- No sign-up
- Works offline after first load
Converter hubs
Length
Data
How to convert units
- Choose a Category, such as length, weight or temperature.
- Pick the From and To units and type the Value.
- Read the result — or choose Convert a list to convert many values, one per line.
About Unit Converter
One place for everyday conversions: length, weight, temperature, data and speed. Choose a conversion — centimetres to inches, kg to pounds, Celsius to Fahrenheit, MB to GB and many more — to open its converter.
Each converter works both ways, shows the formula and includes a table of common values.
Good for
- Quick everyday conversions
- Cooking, travel and shopping
- Homework and science
Frequently asked questions
What units can I convert?
Length, weight and mass, temperature, area, volume, speed, data storage, time and more — pick a category and type a value.
Are my conversions private?
Yes. Everything is calculated locally in your browser; nothing you type is uploaded.
Can I convert many values at once?
Yes. Choose Convert a list and enter one value per line.
Can I change the number of decimals?
Yes. Set Decimals, or change the Notation for very large or very small numbers.
Are there pages for single conversions?
Yes — such as cm to inches, kg to lbs and Celsius to Fahrenheit. They're linked below the converter.