Unit Converter – Length, Weight, Volume & Speed
Convert between the most common units of measurement instantly. Supports length, weight, volume, and speed.
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Enter a value
How to Use
- 1
Select a category (length, weight, volume or speed)
- 2
Choose the units you want to convert from and to
- 3
Enter a value to see the result instantly
Frequently Asked Questions
How many centimeters are in an inch?
1 inch = 2.54 centimeters.
How many kilograms are in a pound?
1 pound = approximately 0.4536 kilograms.
How many liters are in a gallon?
1 US gallon = approximately 3.785 liters.
Is this tool free?
Yes, completely free and no signup required.
Written by Sarah GlaserPublished
Convert length, weight, volume and more
A unit converter changes a measurement from one unit to another across categories like length, weight, volume, area and speed. Pick the category, enter a value, and choose the units to convert between.
It replaces a drawer full of conversion charts with one quick tool.
Everyday conversions
- Cooking and recipes in metric or imperial.
- DIY, travel and shipping measurements.
- School, science and engineering work.
- Just temperatures? Use the temperature converter. Screen units? The pixel converter.
Converting without touching a server
Conversions happen in your browser instantly, with nothing sent anywhere.