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Weight Converter

Convert between kilograms, pounds, grams, ounces, tonnes and stone

Enter Weight

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Key Formulas

1 kg = 2.20462 lbs
1 lb = 16 oz = 453.592 g
1 stone = 14 lbs = 6.35029 kg
1 tonne = 1000 kg
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How Weight Conversion Works

Weight (mass) conversion uses fixed ratios based on the kilogram as the SI base unit of mass.

Metric Units

Metric: milligram (mg), gram (g), kilogram (kg), tonne (t). Each step is a factor of 1000.

Imperial Units

Imperial: ounce (oz), pound (lb), stone (st). 16 oz = 1 lb, 14 lbs = 1 stone.

Frequently Asked Questions

How many pounds are in a kilogram?
There are approximately 2.20462 pounds in one kilogram.
How many grams are in an ounce?
There are approximately 28.3495 grams in one ounce.
What is a stone in weight?
A stone is 14 pounds or about 6.35 kilograms. Commonly used in the UK and Ireland for body weight.
What is the difference between mass and weight?
Mass measures the amount of matter (in kg), weight is the force of gravity on that mass. On Earth's surface they are proportional.