Weight and Mass Converter — Free Online
Convert weight and mass units online for free. Supports kilograms, pounds, ounces, grams, stones, milligrams, and metric tonnes. Instant conversion.
About Weight Converter
Our weight converter converts between all common units of mass and weight instantly. Enter a value in any supported unit — kilograms, pounds, ounces, grams, milligrams, metric tonnes, imperial tons, and stones — and see all other unit equivalents updated simultaneously. Essential for cooking recipe conversion, understanding nutritional labels, luggage weight allowances for flights, shipping weight calculation, and converting body weight between metric and imperial systems.
Frequently Asked Questions
How many pounds in a kilogram?
1 kilogram = 2.20462 pounds. Conversely, 1 pound = 0.453592 kilograms.
What is the difference between weight and mass?
Mass is the amount of matter in an object. Weight is the gravitational force on that mass. In everyday use they are used interchangeably.
How many ounces in a pound?
There are exactly 16 ounces in 1 pound.
What is a stone in kilograms?
1 stone = 14 pounds = 6.35029 kilograms. Stones are commonly used for body weight in the UK and Ireland.
What is the difference between metric and imperial tonnes?
A metric tonne = 1000kg. An imperial ton (long ton) = 1016kg. A US short ton = 907kg.