Unit Converter
Convert between length, weight, and temperature units instantly. Pick a category, choose your units, and the result updates as you type.
How to use the unit converter
- Choose a category: Length, Weight, or Temperature.
- Enter the value you want to convert, and pick the "From" unit.
- Pick the "To" unit — the converted result appears instantly.
- Use the swap button to flip the From and To units in one click.
Why use a unit converter?
Recipes in ounces, a car's fuel economy in miles, a weather forecast in Fahrenheit, a product spec in centimeters — everyday life mixes measurement systems constantly, and converting by hand is easy to get wrong. This tool covers the most commonly needed length, weight, and temperature conversions using standard, internationally recognized conversion factors and exact temperature formulas, with results updating live as you type. It's built for everyday, cooking, travel, fitness, and general reference use — for engineering, medical, or scientific work requiring certified precision, please verify against an authoritative source.
Which units does this converter support?
Length (millimeters, centimeters, meters, kilometers, inches, feet, yards, miles), weight (milligrams, grams, kilograms, ounces, pounds, stone), and temperature (Celsius, Fahrenheit, Kelvin).
How accurate are the conversions?
Length and weight use standard internationally recognized conversion factors, and results are shown rounded to six decimal places. Temperature uses the exact Celsius, Fahrenheit, and Kelvin formulas rather than a simple multiplier.
Why is temperature converted differently from length or weight?
Celsius, Fahrenheit, and Kelvin don't share a common zero point, so temperature can't be converted with a simple multiplication like length or weight. This tool uses the correct offset formulas for each pair of units.