Unit Converter
Convert length, weight, temperature, and speed between metric and imperial units.
About This Tool
A single tool for the unit conversions people search for every day — kilometers to miles, kilograms to pounds, Celsius to Fahrenheit, and more. Pick a measurement category, choose your "from" and "to" units, and get an accurate result instantly using precise conversion constants.
How to Use Unit Converter
- Select a category: Length, Weight, Temperature, or Speed.
- Choose the unit you are converting from and the unit you want.
- Type a value — the converted result updates instantly.
Frequently Asked Questions
How accurate are the conversions?
All conversions use standard, internationally recognized conversion factors (e.g. exactly 2.54 cm per inch), so results are precise to the decimal places shown.
Which categories are supported?
Length (meters, kilometers, miles, feet, inches, yards), Weight (kilograms, grams, pounds, ounces), Temperature (Celsius, Fahrenheit, Kelvin), and Speed (km/h, mph, m/s, knots).