Unit Converter
Convert between everyday units of length, weight, and temperature: km to miles, cm to inches, feet to meters, kg to lbs, Celsius to Fahrenheit, and more. It works as a length converter, weight converter and temperature converter in one. Pick a category, choose your units, and the conversion updates live as you type.
Frequently asked questions
Why does temperature need special handling compared to length or weight?
Length and weight units all scale from a zero point (0 meters is 0 feet), so converting is just multiplication. Temperature scales don't share a zero point — 0°C isn't 0°F — so converting requires an offset calculation specific to each pair of units.
How precise are the conversions?
Results are rounded to 6 decimal places, which is more than enough precision for virtually any practical use while keeping the display readable.
How do I convert km to miles?
Choose the Length category, set the from-unit to kilometers and the to-unit to miles, then type the distance. One kilometer is about 0.621371 miles.
How do I convert kg to lbs?
Choose the Weight category, then kilograms to pounds. One kilogram is about 2.204623 pounds.
How do I convert cm to inches, or feet to meters?
In the Length category, pick centimeters and inches (1 inch is 2.54 cm) or feet and meters (1 foot is 0.3048 m). The result updates as you type.