All-in-One Unit Converter
Convert length, area, mass, temperature, volume, speed, time, storage, pressure, energy, power, angles, and fuel economy
Convert values between units
Choose a category, enter one or more values, then select the two units you need
- Choose categoryPick the measurement family.
- Set unitsSelect the From and To units.
- Use resultReview, copy, or download the results.
Choose units and enter values
Enter one or more values, then convert them together
Choose a category and units, then enter one or more values to convert.
Ready to convert
Clear measurement definitions
US and Imperial volume units are labelled separately. Decimal storage units use powers of 1000, while binary IEC units use powers of 1024.
FAQs
Are US and Imperial gallons the same?
No. They use different definitions, so this tool labels and converts them separately.
What is the difference between MB and MiB?
MB is decimal and uses 1,000,000 bytes. MiB is binary and uses 1,048,576 bytes.
Why are months and years not included under Time?
Calendar months and years vary in length. Use Date Calculator for calendar arithmetic.
Does fuel economy use normal multiplication?
Some fuel units are reciprocal. The converter uses explicit formulas for kilometres per litre, litres per 100 kilometres, and US or Imperial MPG.
Can I convert multiple values at once?
Yes. Enter values separated by commas or line breaks and the tool shows them in a compact conversion table.
How should I use rounded conversion results?
Use the displayed value for everyday reference and keep extra tolerance for purchasing, construction, manufacturing, or safety-critical work.