Unit Converter
Convert length, weight, temperature, volume and speed. Type a number and read the answer in large type.
Quick answer: Choose a type, enter a number and pick the units. For example, 10 centimeters is 3.937 inches, and 1 inch is exactly 2.54 centimeters.
How to use it
- Choose length, weight, temperature, volume or speed.
- Type your number and choose the two units.
- The answer appears at once. Press Swap to convert the other way.
Popular conversions
- Centimeters to inches
- Inches to centimeters
- Feet to meters
- Meters to feet
- Miles to kilometers
- Kilometers to miles
- Kilograms to pounds
- Pounds to kilograms
- Ounces to grams
- Grams to ounces
- Stone to pounds
- °c to °F
- °f to °C
- Us cups to milliliters
- Milliliters to US cups
- Liters to US gallons
- Us gallons to liters
- Miles per hour to kilometers per hour
- Kilometers per hour to miles per hour
What people use it for
- Cooking and baking
- Travel and road signs
- Fitness and body weight
- School and homework
- Shopping from other countries
Questions
How accurate is the converter?
It uses the exact international definitions, such as 1 inch = 2.54 centimeters and 1 pound = 0.45359237 kilograms.
Does it use US or UK units?
US customary units are used for cups, pints, quarts and gallons.
Is it free?
Yes. No sign-up, no install and no limit.
Is anything saved or sent?
No. Everything runs in your browser. Only your own best score, where a page shows one, is kept on your device.
Last updated 2026-10-24. Free to use, no sign-up. Made by ficklestudio26.