Body weight, recipes, luggage limits and shipping all switch between pounds and kilograms. This weight converter handles pounds, ounces, stones, US tons, milligrams, grams, kilograms and metric tons, shows every result in pounds and ounces and lists your value in all units at once.
Quick answer: 1 lb = 0.4536 kg (exactly 0.45359237). 1 kg = 2.2046 lb. 1 lb = 16 oz, 1 oz = 28.35 g, 1 stone = 14 lb. 150 lb = 68.04 kg; 70 kg = 154.3 lb (154 lb 5.2 oz).
How to use the weight converter
- Type the value you want to convert.
- Choose From and To units; use the swap button to reverse them.
- The result updates as you type, with a pounds-and-ounces line and a table of every unit.
Weight conversion factors
| Unit | Equals |
|---|---|
| 1 pound | 16 oz = 0.453592 kg |
| 1 ounce | 28.3495 g |
| 1 stone | 14 lb = 6.35029 kg |
| 1 US ton | 2,000 lb = 907.185 kg |
| 1 gram | 0.035274 oz |
| 1 kilogram | 2.20462 lb |
| 1 metric ton | 1,000 kg = 2,204.62 lb |
Pounds to kg chart
| Pounds | Kilograms |
|---|---|
| 1 lb | 0.45 kg |
| 10 lb | 4.54 kg |
| 100 lb | 45.36 kg |
| 150 lb | 68.04 kg |
| 180 lb | 81.65 kg |
| 200 lb | 90.72 kg |
The charts below the converter list more body weights in both directions.
Examples
- Body weight: 180 lb × 0.453592 = 81.65 kg.
- Luggage: a 23 kg checked-bag limit is 23 × 2.20462 = 50.7 lb.
- Cooking: 250 g of flour ÷ 28.3495 = 8.8 oz.
- Baby weight: 3.5 kg = 7 lb 11.5 oz.
Common mistakes
- Writing 154.3 lb as 154 lb 3 oz. The decimal part is a fraction of a pound; 0.3 lb is about 5 oz.
- Confusing fluid ounces with ounces. Fluid ounces measure volume, not weight.
- Mixing US and metric tons. The difference is about 10%.
Using your weight for a health check? Try the BMI calculator or the calorie calculator. For lengths and heights, see the length converter.
Frequently asked questions
How many kilograms are in a pound?
One pound is exactly 0.45359237 kilograms. To convert pounds to kilograms, multiply by 0.453592, or divide by 2.2046 for a quick estimate. 150 lb × 0.453592 = 68.04 kg.
How do I convert kg to lbs?
Multiply kilograms by 2.20462. 70 kg × 2.20462 = 154.32 lb, which is 154 lb 5.2 oz. A quick mental shortcut is to double the kilograms and add 10%: 70 × 2 = 140, plus 14 = 154.
How many ounces are in a pound?
There are 16 ounces in a pound (avoirdupois). One ounce is 28.35 grams.
How many grams are in an ounce?
One ounce is 28.349523125 grams, usually rounded to 28.35 g. Eight ounces is about 226.8 g.
What is a stone in pounds?
One stone is 14 pounds (6.35 kg). Stones are still used for body weight in the UK and Ireland: 11 stone is 154 lb or about 69.9 kg.
What is the difference between a US ton and a metric ton?
A US (short) ton is 2,000 lb, about 907.2 kg. A metric ton (tonne) is 1,000 kg, about 2,204.6 lb. A UK long ton is 2,240 lb.
How much is 100 kg in pounds?
100 kg × 2.20462 = 220.46 lb.
Is weight the same as mass?
In everyday use, yes: pounds and kilograms describe how heavy something is. Strictly speaking, kilograms measure mass and weight is the force of gravity on that mass, but scales are calibrated so the numbers match on Earth.
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