FREE TOOL · ON YOUR DEVICE
Unit converter for free
Type a value and convert it between metric, imperial and US units: centimeters and inches, kilograms and pounds, degrees Celsius and Fahrenheit, liters and gallons, kB and KiB, and many more. You see the value in every unit of the category at once, with factors that are exact by definition.
- Free with an account
- 10 categories
- Exact factors
- Choose the category
- Enter the value and units
- Copy the result
HOW TO USE IT
Three steps.
Choose the category
Length, mass, temperature, volume, area, speed, time, storage, pressure or energy.
Enter the value and units
Choose the units to convert from and to, or use a quick pair such as cm ↔ in or kg ↔ lb.
Copy the result
The table shows the same value in every unit of the category.
NEXT STEP
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Unit converter: common questions
Is a US cup or gallon the same as a UK one?
No. The US gallon is 3.785 L and the UK gallon, 4.546 L. The US cup is 236.6 mL; the UK imperial cup, 284.1 mL; and the metric cup, 250 mL.
Why does a 1 TB drive show up as 931 GB?
The maker counts 1 TB as a trillion bytes and Windows divides by 1,024 (really GiB). That is why this tool keeps kB (1,000 bytes) and KiB (1,024 bytes) apart.
Are the factors exact?
Yes: official definitions are used, such as 1 in = 2.54 cm or 1 lb = 0.45359237 kg. Months and years in the time category are Gregorian calendar averages.
Is my data sent to a server?
No. The numbers, dates and names you type are calculated in your browser and are not sent to Cocuyo or to any third party.
Is it really free?
Yes. You can try it before signing up; to keep using it, we ask for a free account, with no subscription. It uses no credits and does not count toward your 30 welcome uses: it has no usage cap.
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