Weight & Mass Converter
Convert weight and mass between metric and imperial units instantly. Kilograms, pounds, ounces, grams, stones, metric tons and more — perfect for everyday use, shipping, cooking, and science.
Common Weight Conversions
| From | To |
|---|---|
| 1 kilogram (kg) | 2.20462 pounds (lb) |
| 1 kilogram | 1,000 grams |
| 1 pound (lb) | 453.592 grams |
| 1 pound | 16 ounces |
| 1 stone | 14 pounds |
| 1 stone | 6.35029 kg |
| 1 metric ton | 1,000 kg |
| 1 US short ton | 907.185 kg |
| 1 oz | 28.3495 grams |
| 1 kg | 35.274 oz |
Weight Unit Definitions
- Kilogram (kg)
- The SI base unit of mass. Defined by the Planck constant.
- Pound (lb)
- The primary imperial unit of mass. Exactly 0.45359237 kg.
- Ounce (oz)
- 1/16 of a pound = 28.3495 grams. Used for food and small packages.
- Stone (st)
- 14 pounds = 6.35 kg. Used for body weight in the UK and Ireland.
- Gram (g)
- 1/1000 of a kilogram. Standard for small measurements.
- Metric ton (t)
- 1,000 kilograms. Also called a tonne.
Frequently Asked Questions
How do I convert kg to lbs?
Multiply kilograms by 2.20462. Example: 70 kg × 2.20462 = 154.32 lbs.
How many ounces are in a pound?
Exactly 16 ounces (oz) make one pound (lb).
What is the difference between mass and weight?
Mass is the amount of matter (kg), while weight is the gravitational force on that mass (Newtons). In everyday use the terms are used interchangeably.
How many pounds in a stone?
One stone equals exactly 14 pounds. Stones are used for body weight in the UK and Ireland.