Weight & Mass Converter
Weight and mass converter: kilograms, pounds, ounces, grams, stones, tons, carats and daltons, with a full conversion table.
How to use this calculator
- Type the value you want to convert.
- Choose the unit you are converting from and the one you want.
- Read the result, or the full table of equivalent units below.
Convert mass between metric units (kg, g, mg, µg, t), US customary units (lb, oz, short ton), stones, carats and the dalton used for atoms and molecules.
The pound is defined as exactly 0.45359237 kg. In everyday language “weight” means mass; physically, weight is a force measured in newtons.
Conversion formula
1 lb = 0.453592 kg · 1 kg = 2.20462 lb
Common conversions: pound → kilogram
| lb | kg |
|---|---|
| 1 lb | 0.453592 kg |
| 2 lb | 0.907185 kg |
| 5 lb | 2.26796 kg |
| 10 lb | 4.53592 kg |
| 20 lb | 9.07185 kg |
| 50 lb | 22.6796 kg |
| 100 lb | 45.3592 kg |
| 1 000 lb | 453.592 kg |
Frequently asked questions
How many pounds are in a kilogram?
1 kg = 2.20462 lb.
How many grams are in an ounce?
1 oz = 28.3495 g.