Which unit categories are supported?
Length (millimeters, centimeters, meters, kilometers, inches, feet, yards, miles), Weight (milligrams, grams, kilograms, metric tons, ounces, pounds, stone), and Temperature (Celsius, Fahrenheit, Kelvin).
Calculators
Unit Converter
Convert length, weight and temperature units instantly. Everything runs locally in your browser.
FAQ
Unit Converter FAQ
Why is temperature conversion different from length or weight?
Celsius, Fahrenheit, and Kelvin don't share a common zero point, so temperature can't use a simple multiplication factor like length or weight units can — this tool converts through Celsius using the standard formulas for each scale.
How precise are the conversion results?
Conversions are calculated with full floating-point precision internally, then displayed rounded to six significant digits for readability.