Supported Weight & Mass Units
- Kilogram (kg): Base SI unit of mass, equal to 1,000 grams or approx. 2.20462 pounds.
- Pound (lb): 16 ounces or 0.45359237 kg.
- Gram (g): 1/1,000 of a kilogram.
- Ounce (oz): 1/16 of a pound or 28.3495 grams.
- Metric Ton (t): 1,000 kilograms.
- Stone (st): 14 pounds or 6.35029 kg — common in the UK & Ireland.
How Weight & Mass Conversion Works
Mass conversions use constant factors relative to the kilogram. 1 pound is internationally defined as exactly 0.45359237 kg, and 1 ounce is exactly 0.028349523125 kg.
Frequently Asked Questions
How many pounds are in 1 kilogram?
1 kilogram equals approximately 2.20462 pounds (lbs).
How many grams are in an ounce?
1 avoirdupois ounce equals approximately 28.3495 grams.
What is the difference between mass and weight?
Mass is the amount of matter in an object (measured in kg), while weight is the force exerted on that mass by gravity.