Weight Converter
Kilograms, pounds, stones, and ounces — all at once.
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Decimals and fractions both work — 1.5 or 1 1/2.
1 kg = 2.204623 lb
1 kg in every other unit
- Milligram (mg)1,000,000
- Gram (g)1,000
- Tonne (metric ton) (t)
Exactly 1000 kg. Distinct from both the US short ton and the UK long ton below.
0.001 - Grain (gr)15,432.36
- Ounce (oz)35.27396
- Pound (lb)2.204623
- Stone (st)
14 lb. Still the everyday unit for body weight in the UK and Ireland.
0.157473 - Short ton (US) (ton)
2000 lb.
0.001102311 - Long ton (UK) (long ton)
2240 lb — about 12% heavier than the short ton.
0.0009842065 - Troy ounce (ozt)
The unit gold and silver are priced in. About 10% heavier than the ordinary ounce.
32.15075 - Pennyweight (dwt)643.0149
- Carat (metric) (ct)
A gemstone’s mass — exactly 200 mg. Not karat, which is gold purity out of 24.
5,000
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How to use it
Enter a weight and pick its unit to see it in kilograms, pounds, stones, ounces, and every other unit at once, as you type.
Type a number and choose its unit. The answer appears in every other unit at once — kilograms, pounds, stones, ounces, grams, and tonnes.
The numbers are exact: a pound is officially exactly 0.45359237 kg. Quick mental trick for kilos to pounds: double it and add 10%.
Easy to mix up: a “ton” can mean three different things (a metric tonne, a US ton, or a UK ton), so each is listed separately. Gold and silver are weighed in troy ounces, which are about 10% heavier than normal ounces.
Stones are included for body weight in the UK and Ireland: 1 stone is 14 pounds.
Kilograms to pounds
A kilogram is about 2.2 pounds. “Double it and add 10%” gets you within 1% — fine for luggage, not quite for baking.
| Kilograms | Pounds |
|---|---|
| 1 kg | 2.20462 lb |
| 5 kg | 11.0231 lb |
| 10 kg | 22.0462 lb |
| 20 kg | 44.0925 lb |
| 50 kg | 110.231 lb |
| 60 kg | 132.277 lb |
| 70 kg | 154.324 lb |
| 80 kg | 176.37 lb |
| 90 kg | 198.416 lb |
| 100 kg | 220.462 lb |
Stone to kilograms
A stone is 14 pounds, or about 6.35 kg. For something like 11 st 4 lb, turn the pounds into part of a stone first: 11 st 4 lb is 11.29 st.
| Stone | Kilograms |
|---|---|
| 7 st | 44.4521 kg |
| 8 st | 50.8023 kg |
| 9 st | 57.1526 kg |
| 10 st | 63.5029 kg |
| 11 st | 69.8532 kg |
| 12 st | 76.2035 kg |
| 13 st | 82.5538 kg |
| 14 st | 88.9041 kg |
| 15 st | 95.2544 kg |
| 20 st | 127.006 kg |
Grams to ounces
An ounce is about 28.35 grams. Recipes often round it to 28 g, which is fine for most cooking.
| Grams | Ounces |
|---|---|
| 10 g | 0.35274 oz |
| 25 g | 0.881849 oz |
| 50 g | 1.7637 oz |
| 100 g | 3.5274 oz |
| 200 g | 7.05479 oz |
| 250 g | 8.81849 oz |
| 500 g | 17.637 oz |
| 1,000 g | 35.274 oz |
FAQ
How many pounds are in a kilogram?
About 2.2046 pounds.
How do I convert stones and pounds to kilograms?
Multiply the stones by 6.35 and the pounds by 0.4536, then add them. 12 st 6 lb is about 78.9 kg.
Is a troy ounce the same as an ounce?
No. A troy ounce is 31.1 g, about 10% heavier than a normal 28.35 g ounce. Gold and silver are priced in troy ounces.
What’s the difference between a ton and a tonne?
A tonne is 1,000 kg. A US ton is 907 kg and a UK ton is 1,016 kg.
How it worksFor the curious
Each unit is defined by its exact size in kilograms and every pair is derived through that base. The 1959 international agreement defines the pound as exactly 0.45359237 kg, making an ounce exactly 28.349523125 g.
The tonne is 1,000 kg; the US short ton 2,000 lb (907.18 kg); the UK long ton 2,240 lb (1,016.05 kg). A troy ounce is 31.1034768 g. A carat is a gemstone mass of 200 mg — not karat, the measure of gold purity out of 24.
Strictly, these are masses rather than weights: weight is the force of gravity on a mass and would change on the Moon. Every everyday use of “weight” is really a mass.