⚖️ Weight & Mass Converter
Free online weight and mass converter. Convert between grams, kilograms, pounds, ounces, stone, tonnes and more.
Conversion Reference Table
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Weight & Mass Conversion Guide
Weight conversions come up constantly in everyday life — from weighing yourself on a scale that uses different units, to following a recipe that lists ingredients in grams when you only have a cup measure, to shipping a parcel internationally. Our weight converter handles all common weight and mass units instantly.
The metric system uses milligrams (mg), grams (g), kilograms (kg) and metric tonnes (t). The imperial system uses ounces (oz), pounds (lb), stone (st) and US/UK tons. The stone unit — still widely used in the UK and Ireland for body weight — equals 14 pounds or approximately 6.35 kilograms.
Key Weight Conversion Facts
One kilogram equals 2.20462 pounds. One pound equals 453.592 grams. One stone equals 6.35029 kilograms or 14 pounds. One metric tonne equals 1,000 kilograms or 2,204.62 pounds. These are the conversions our users search for most, and our tool calculates them all instantly with full precision.
For cooking and baking, the most important conversions are between grams and ounces (1 oz = 28.3495 g) and between kilograms and pounds. For fitness and health, the kg-to-stone and kg-to-lbs conversions are most popular. Our converter covers all of these use cases in one place.