Unit Converter

Convert length, weight and temperature units instantly — metric to imperial and back.

How to convert units

Pick a category (length, weight or temperature), enter your value, choose the source and target units — the result updates live as you type.

Length: meters, kilometers, centimeters, millimeters, miles, yards, feet, inches, nautical miles
Weight: kilograms, grams, pounds, ounces, tonnes, stone
Temperature: Celsius, Fahrenheit, Kelvin

How many miles is 1 kilometer?

1 kilometer equals 0.621371 miles.

What is 0°C in Fahrenheit?

0°C equals 32°F. Our converter handles all temperature math including Kelvin.

Does it work offline?

Yes — after the page loads, all conversions run locally without internet.