Unit Converter.
Convert everyday measurements as you type.
Converted value
ftConvert everyday units without the guesswork
Choose a measurement, enter a value and select the units to convert from and to. Results update as you type. Swap units reverses the two units while keeping the value you entered.
- Eight everyday measurement categories with instant results
- Explicit US/imperial volume and decimal/binary storage units
- Swap units and copy your result with no uploads or account
Common questions
Which measurements can I convert?
Convert length, weight, temperature, area, volume, speed, time and data storage. Common choices include metres to feet, kilograms to pounds, Celsius to Fahrenheit, square metres to square feet and litres to gallons.
Are US and imperial gallons the same?
No. A US liquid gallon is 3.785411784 litres; an imperial gallon is 4.54609 litres. US cups and metric 250 mL cups are also different, so each is labelled separately. The weight ounce measures mass, while a fluid ounce measures liquid volume.
What is the difference between MB and MiB?
Decimal storage uses powers of 1,000: one MB is 1,000,000 bytes. Binary storage uses powers of 1,024: one MiB is 1,048,576 bytes. One byte is eight bits. Choose the explicit unit rather than assuming a device or file-size label uses the same convention.
How do I enter decimals and large numbers?
Use a dot for decimals, such as 12.5. Properly grouped commas such as 1,000.25 and scientific notation such as 1e3 are accepted. Results are rounded to 12 significant digits for display and copying. Very large or small results use scientific notation. Values outside the browser’s numeric range are rejected.
Can I convert negative temperatures?
Yes, down to absolute zero: −273.15 °C, −459.67 °F or 0 K. Lower values are rejected. Time units here are fixed durations: a day is 24 hours and a week is seven days; calendar months and years are intentionally excluded.
Are my conversions saved or sent anywhere?
No. Conversion happens in your browser, without an account or server request. Leaving or refreshing resets the values. These are everyday approximate numeric conversions, not a measurement calibration service.