Convert between length, weight, temperature, volume, and speed units instantly. Pick a category, enter a value, and see the converted result right away, all calculated in your browser.
How This Unit Converter Works
Choose a category such as length, weight, temperature, volume, or speed using the tabs above the converter. Enter a value in the “From” field and choose the unit you are converting from and to. The result updates instantly, and you can use the swap button to quickly reverse the direction of the conversion.
Supported Categories
- Length. Meters, kilometers, centimeters, millimeters, miles, yards, feet, and inches.
- Weight. Kilograms, grams, milligrams, pounds, ounces, and tons.
- Temperature. Celsius, Fahrenheit, and Kelvin.
- Volume. Liters, milliliters, gallons, quarts, cups, and fluid ounces.
- Speed. Kilometers per hour, miles per hour, meters per second, and knots.
Who This Tool Is For
Travelers converting distances or temperatures between countries, students working through science or math homework, cooks adjusting recipe measurements, and anyone who needs a quick, accurate conversion without doing the math by hand.
Frequently Asked Questions
Is this unit converter free to use?
Yes, completely free with no limit on how many conversions you can make, and no account is required.
Does this tool store or send my data anywhere?
No. Everything happens directly in your browser using JavaScript. Nothing you enter is sent to a server or saved anywhere.
How accurate are the conversions?
Conversions use standard, widely accepted conversion factors and are rounded to six decimal places, which is more than accurate enough for everyday use.
Can I convert in both directions?
Yes. Use the swap button between the two fields to instantly reverse which unit you are converting from and to.