Last updated: May 2026
Convert between kilograms, grams, pounds, ounces, stone, and metric tons instantly — metric to imperial and back.
Convert between kg, g, lb, oz, stone, metric ton, and more
Common Weight References
| Kilograms | Pounds | Stone (UK) |
|---|---|---|
| 1 kg | 2.205 lb | 0.157 st |
| 50 kg | 110.2 lb | 7 st 12 lb |
| 70 kg | 154.3 lb | 11 st 0 lb |
| 100 kg | 220.5 lb | 15 st 10 lb |
| 1 oz | 0.0625 lb | 28.35 g |
Other Unit Converters
Weight measurement splits the world in two. Most countries use kilograms for body weight and grams for cooking. The US uses pounds and ounces for both. The UK adds a third system — stone — specifically for body weight (one stone equals 14 pounds). If you're tracking fitness in an app that defaults to the wrong unit, or following a recipe from a different country, this converter handles all three systems.
The metric system is decimal-based: 1 kg = 1,000 g, 1 metric ton = 1,000 kg. Imperial weight is messier: 1 lb = 16 oz, 1 stone = 14 lb, 1 short ton = 2,000 lb. None of those numbers connect cleanly to each other.
| From | To | Multiply By | Quick Estimate |
|---|---|---|---|
| Kilograms | Pounds | 2.20462 | × 2.2 |
| Pounds | Kilograms | 0.45359 | ÷ 2.2 |
| Grams | Ounces | 0.03527 | ÷ 28.35 |
| Ounces | Grams | 28.3495 | × 28 |
| Stone | Pounds | 14 | exact |
| Pounds | Stone | 0.07143 | ÷ 14 |
| Kilograms | Stone | 0.15747 | ÷ 6.35 |
How many pounds is 100 kg?
100 kg × 2.20462 = 220.46 pounds. A useful benchmark to memorize: 100 kg is just over 220 lb, and 100 lb is about 45.4 kg. If you know one, you can estimate the other quickly.
What does "stone" mean in UK weight?
Stone is a unit of weight still used in the UK and Ireland specifically for body weight. One stone equals exactly 14 pounds or about 6.35 kg. A person who weighs "12 stone 4" weighs 172 lb or 78 kg. It's rarely used outside body weight contexts — you won't see stone on food packaging or shipping labels.
Is a metric ton the same as a US ton?
No. A metric ton (tonne) is 1,000 kg = 2,204.6 lb. A US short ton is 2,000 lb = 907.2 kg. A UK long ton is 2,240 lb = 1,016 kg. The metric ton is the heaviest of the three. Always check which ton a document means when dealing with large quantities of cargo or materials.
How do I convert grams to tablespoons for cooking?
Grams to tablespoons depends on the ingredient — density varies. Rough guides: water = 15 g per tbsp; flour = about 8 g per tbsp; sugar = about 12.5 g per tbsp; butter = about 14 g per tbsp. For baking precision, weighing in grams is more accurate than volume measurements anyway.
Why do Americans use pounds instead of kilograms?
The same reason they use feet and miles — historical inertia from British imperial units adopted before the metric system was standardized. The US came close to switching in the 1970s but the Metric Conversion Act of 1975 was voluntary, and consumer habits never shifted. Science, medicine, and pharmaceuticals in the US do use metric units.