Unit Converter
Convert length, weight, temperature, volume, cooking measures, area, speed, data, time and more. Type in either box; every other unit is listed below so you can see them all at once.
What “calculated on your device” means for this tool
When you open this page, your browser downloads the converter itself, the same way any web page loads. From then on, every conversion happens inside your browser, on your own device, and it works offline. The numbers you type are never sent to this website's server or to anyone else.
What is saved: the last units you picked, in this browser only, so they are ready next time.
Visit counting: this site counts visits with privacy-friendly analytics. No cookies, no ads, no tracking across other sites, and your IP address is not stored. It records which page you opened, your country, your device type and how long you stayed.
Conversions use exact international definitions (for example 1 inch = 2.54 cm, 1 pound = 0.45359237 kg). US and UK cups, pints and gallons are different sizes and are listed separately.
All units
Quick table
How to use the Unit Converter
- Pick a kind of unit, like Length or Cooking.
- Choose the units to convert from and to.
- Type a number in either box; the other updates as you type.
- See every other unit in the list below, and a quick table you can print.
Questions
How many centimeters are in an inch?
Exactly 2.54. One foot is 30.48 cm and one meter is about 39.37 inches.
How do I convert Celsius to Fahrenheit?
Multiply by 9, divide by 5 and add 32. So 20 °C is 68 °F. Going back: subtract 32, multiply by 5 and divide by 9.
How many pounds are in a kilogram?
About 2.2046. One pound is exactly 0.45359237 kg.
Is a US cup the same as a UK or metric cup?
No. A US cup is about 237 ml, a metric cup is 250 ml and an old UK cup is about 284 ml. All three are listed under Cooking.
Why does my 1 TB drive show less space?
Drive makers count 1 TB as 1,000,000,000,000 bytes, while many computers count in units of 1,024. So 1 TB shows as about 931 GiB. Both are listed under Data.
Popular uses: Kilograms to Pounds (kg to lbs) · Centimeters to Inches (cm to in) · Celsius to Fahrenheit (°C to °F)
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