Unit Converter

Convert metric and imperial units instantly

This unit converter changes a value from one unit to another in four groups: length, weight, volume and temperature. Pick a group, choose the from and to units, and type a number. The result updates as you type, so a quick kg to lbs or meters to feet check takes a few seconds.

How to use it

1. Click a group: Length, Weight, Volume or Temperature.
2. Choose the From and To units. Use the ⇄ button to swap them.
3. Type a number in the Value box. The converted result appears below.

Supported units

Group	Units
Length	Meter, Kilometer, Centimeter, Millimeter, Mile, Yard, Foot, Inch
Weight	Kilogram, Gram, Milligram, Pound, Ounce, Ton (1,000 kg)
Volume	Liter, Milliliter, Gallon (US), Quart, Pint, Cup, Fluid Ounce
Temperature	Celsius, Fahrenheit, Kelvin

How it works

For length, weight and volume, the tool first turns your value into a base unit (meter, kilogram or liter). Then it divides by the size of the target unit. For example, 1 pound is 0.453592 kg, so 92.1 kg ÷ 0.453592 = 203.0459091 lbs. Results are rounded to 8 decimal places, and trailing zeros are removed.

Temperature uses formulas instead of a fixed factor. The value is turned into Celsius first: °C = (°F − 32) × 5/9, or °C = K − 273.15. Then it is turned into the target scale: °F = °C × 9/5 + 32, or K = °C + 273.15. Temperature results are rounded to 6 decimal places.

Quick examples

• 97.8 kg = 215.61226829 lbs
• 1 meter = 3.2808399 feet
• 5 miles = 8.04672 kilometers
• 1 US gallon = 3.78541 liters
• 100 °C = 212 °F

Frequently asked questions

How do I convert kg to lbs?

Choose Weight, set From to Kilogram and To to Pound, then enter the weight. The tool divides by 0.453592, so 1 kg is about 2.2046 lbs.

Is the gallon a US or UK gallon?

It is the US gallon (3.78541 liters). Quart, pint, cup and fluid ounce use US sizes too. UK imperial gallons are not included.

Why does a very small result show as 0?

Results are rounded to 8 decimal places (6 for temperature). A value smaller than that, such as milligrams to tons, rounds to 0. Try a closer unit instead.