Weight & Mass Converter
Convert between kilograms, pounds, ounces, stones, tonnes, and more.
Popular weight & mass conversions
Pounds to Kilograms1 pound (lb) equals 0.453592 kilograms (kg). Quick estimate: divide pounds by 2.2 to get kg.Kilograms to Pounds1 kilogram (kg) equals 2.20462 pounds (lbs). Quick estimate: multiply kg by 2.2 to get lbs.Ounces to Grams1 ounce (oz) = 28.3495 grams. 16 oz = 1 pound = 453.6 g. Common for food labels and recipe conversions.Grams to Ounces1 gram (g) = 0.035274 ounces. 100 g = 3.527 oz. 454 g = 1 pound. Used in metric cooking worldwide.
More weight & mass conversions
Weight & Mass units
Kilogram
kg
Gram
g
Milligram
mg
Metric Tonne
t
⚠ This is the metric tonne (1000 kg). See also: short ton (907 kg) and long ton (1016 kg).
Pound
lb
Ounce
oz
Stone
st
Short Ton
ton (US)
⚠ This is the US short ton (907 kg). See also: metric tonne (1000 kg) and long ton (1016 kg).
Long Ton
ton (imp)
⚠ This is the imperial long ton (1016 kg). See also: metric tonne (1000 kg) and short ton (907 kg).
What is weight & mass?
Mass measures the amount of matter in an object; weight is the force of gravity on that mass.
Common use cases
- Body weight conversion
- Shipping and freight
- Cooking and baking
- Scientific measurement
Ambiguity notes
Tonne can mean metric tonne (1000 kg), short ton (907 kg), or long ton (1016 kg). Always clarify.