⚖️ Weight Converter
Convert between kilograms, pounds, ounces, grams, stones, metric tons, and US tons instantly.
Quick Reference
How to Convert Weight Units
Weight (more precisely, mass) conversion works by converting the input to a base unit (kilograms), then to the target unit. This converter handles both metric and imperial weight units.
Common Conversion Factors
| From | To | Multiply by |
|---|---|---|
| Kilograms | Pounds | 2.20462 |
| Pounds | Kilograms | 0.453592 |
| Ounces | Grams | 28.3495 |
| Grams | Ounces | 0.035274 |
| Stones | Kilograms | 6.35029 |
| Metric Tons | Kilograms | 1,000 |
| US Tons | Kilograms | 907.185 |
Weight vs Mass
In everyday use, "weight" and "mass" are used interchangeably. Scientifically, mass is the amount of matter in an object (measured in kilograms), while weight is the force exerted by gravity on that mass (measured in newtons). On Earth's surface, a 1 kg mass weighs approximately 9.81 newtons.
Body Weight Quick Reference
| Kilograms | Pounds | Stones & Lbs |
|---|---|---|
| 50 kg | 110.2 lbs | 7 st 12 lbs |
| 60 kg | 132.3 lbs | 9 st 6 lbs |
| 70 kg | 154.3 lbs | 11 st 0 lbs |
| 80 kg | 176.4 lbs | 12 st 8 lbs |
| 90 kg | 198.4 lbs | 14 st 2 lbs |
| 100 kg | 220.5 lbs | 15 st 10 lbs |
Frequently Asked Questions
1 kilogram equals 2.20462 pounds. To convert kg to lbs, multiply by 2.20462. For a quick estimate, double the kg value and add 10% — e.g., 70 kg ≈ 140 + 14 = 154 lbs (actual: 154.3 lbs).
1 ounce (avoirdupois) equals 28.3495 grams. This is the standard ounce used for food, commerce, and everyday measurement. Note: 1 troy ounce (used for precious metals) equals 31.1035 grams.
A stone is a unit of weight equal to 14 pounds (approximately 6.35 kg). It is commonly used in the UK and Ireland to express body weight. For example, a person weighing 70 kg is about 11 stone.
A US ton (short ton) is 2,000 pounds (907.185 kg). A metric ton (tonne) is 1,000 kg (2,204.62 lbs). A UK ton (long ton) is 2,240 pounds (1,016.05 kg). The metric ton is about 10% heavier than the US ton.