Weight Converter
Convert between kilograms, pounds, ounces, grams, and stone.
Try a common conversion
1 kg = 2.204622622 lb
| Kilograms (kg) | Pounds (lb) |
|---|---|
| 1 | 2.204622622 |
| 2 | 4.409245244 |
| 5 | 11.02311311 |
| 10 | 22.04622622 |
| 15 | 33.06933933 |
| 20 | 44.09245244 |
| 25 | 55.11556555 |
| 50 | 110.2311311 |
| 75 | 165.3466966 |
| 100 | 220.4622622 |
| 150 | 330.6933933 |
| 200 | 440.9245244 |
| 250 | 551.1556555 |
| 500 | 1,102.311311 |
| 1,000 | 2,204.622622 |
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Worked examples
Weight conversions between metric and US customary units use exact definitions. The examples below cover the situations people look up most: body weight, recipes and luggage.
70 kg in pounds
Divide by 0.45359237, or multiply by 2.20462: 70 ÷ 0.45359237 = 154.32 lb.
150 lb in kilograms
Multiply by 0.45359237: 150 × 0.45359237 = 68.04 kg.
8 oz of butter in grams
One ounce is 28.349523125 g, so 8 × 28.349523125 = 226.8 g. Recipes usually round that to 225 g.
11 stone 4 pounds in kilograms
A stone is 14 pounds, so 11 st 4 lb = 11 × 14 + 4 = 158 lb. Then 158 × 0.45359237 = 71.7 kg.
Helpful answers
Frequently asked questions
- How many pounds are in a kilogram?
- 1 kg = 2.20462 lb, rounded. The exact definition runs the other way: 1 lb = 0.45359237 kg.
- How many grams are in an ounce?
- One avoirdupois ounce (the everyday ounce for food and mail) is 28.349523125 g, usually rounded to 28.35 g. Precious metals use the troy ounce, which is 31.1035 g.
- How many pounds are in a stone?
- 14. A stone is 14 pounds, or about 6.35 kg. It is still used for body weight in the UK and Ireland.
- Is weight the same as mass?
- Strictly, kilograms and pounds measure mass, and weight is the force of gravity on it. Everyday scales and recipes use the words interchangeably, and this converter treats them the same way.
Navigation
When to use this
Weight (or more precisely, mass) is the second most commonly converted physical quantity after length. You need it when buying produce at a European market that sells in kilograms, comparing your body weight between a US doctor (pounds) and an international form (kilograms), checking airline baggage limits, or converting recipe ingredients between ounces and grams. This converter handles milligrams, grams, kilograms, metric tons, ounces, pounds, and stone.
The most frequently searched weight conversions are kg to lbs, lbs to kg, oz to grams, and stone to pounds. Stone (14 pounds per stone) is still commonly used for body weight in the UK and Ireland. If you need just one specific pair, use kg to pounds, pounds to kg (swap the units above), or ounces to grams. This tool is best when you need to convert across multiple units or uncommon pairs.
Good to know
Weight conversions use exact unit definitions. One pound is exactly 0.45359237 kg, one ounce is exactly 28.349523125 g, and one stone is exactly 14 pounds. Displayed answers are rounded to your selected precision. For quick mental math: double the kilograms and add 10%. So 75 kg becomes 150 + 15 = 165 lbs (actual: 165.3 lbs). This shortcut works reliably across the full range of practical weights.
The UK uses stone for body weight, which confuses everyone else. If a British person says they weigh "11 stone 4," that is 158 pounds (11 x 14 + 4) or 71.7 kg. Stone is rarely used outside body weight, and even in the UK, younger people are increasingly using kilograms.
Metric tons and imperial tons are close but not identical. A metric ton (tonne) is exactly 1,000 kg (2,204.6 lbs). A US short ton is 2,000 lbs (907.2 kg). A UK long ton is 2,240 lbs (1,016.0 kg). When someone says "a ton," always ask which one — the difference between a short ton and a metric ton is about 10%.
Quick Reference
| From | To | Multiply By |
|---|---|---|
| Ounces | Grams | 28.3495 |
| Pounds | Kilograms | 0.45359 |
| Pounds | Ounces | 16 |
| Kilograms | Pounds | 2.20462 |
| Grams | Ounces | 0.03527 |
| Stone | Pounds | 14 |
| Stone | Kilograms | 6.35029 |
| Metric ton | Pounds | 2,204.62 |
| Metric ton | US short ton | 1.10231 |
| Milligrams | Grams | 0.001 |