Weight and mass unit conversion
On Earth, weight and mass are often used interchangeably in daily life; science treats them differently.
| From | To | Multiply by |
|---|---|---|
| 1 kilogram (kg) | grams (g) | 1000 |
| 1 kilogram (kg) | pounds (lb) | 2.20462 |
| 1 pound (lb) | kilograms (kg) | 0.453592 |
| 1 pound (lb) | ounces (oz) | 16 |
| 1 ounce (oz) | grams (g) | 28.3495 |
| 1 gram (g) | milligrams (mg) | 1000 |
| 1 stone (st) | pounds (lb) | 14 |
| 1 stone (st) | kilograms (kg) | 6.35029 |
| 1 metric ton (t) | kilograms (kg) | 1000 |
| 1 US ton (short) | pounds (lb) | 2000 |
| 1 US ton (short) | kilograms (kg) | 907.185 |
| 1 UK ton (long) | pounds (lb) | 2240 |
| 1 carat (ct) | grams (g) | 0.2 |
Notes
- Jewelry carat (ct) is mass; diamond “carat” in gems is the same unit.
- US short ton ≠ metric tonne.