Weight Converter
Convert kilograms, pounds, ounces, stones, grams and tonnes, plus troy ounces and tola for gold and silver.
About the Weight Converter
The pound is defined as exactly 0.45359237 kilograms, so one kilogram is about 2.20462 pounds. An ounce is 1/16 of a pound (28.349523125 g) and a stone, still used for body weight in the UK and Ireland, is 14 pounds.
“Ton” means different things: a metric tonne is 1,000 kg, a US (short) ton is 2,000 lb and a UK (long) ton is 2,240 lb.
Precious metals use the troy ounce: exactly 31.1034768 g, about 10% heavier than an ordinary ounce. In India and the Gulf, gold is also sold by the tola: 180 grains, or 11.6638038 g (often rounded to 11.66 g; some jewellers use a 10 g 'tola').
The formula
Result = Value × (size of the “from” unit ÷ size of the “to” unit)
- 1 kg
- 1 kg
- 1 g
- 0.001 kg
- 1 mg
- 0.000001 kg
- 1 t
- 1,000 kg
- 1 lb
- 0.45359237 kg
- 1 oz
- 0.02834952313 kg
Every weight unit is converted through kilogram using its exact definition.
Common conversions
| From | To |
|---|---|
| 1 kg | 2.204622622 lb |
| 1 lb | 0.45359237 kg |
| 1 oz | 28.34952313 g |
| 1 g | 0.03527396195 oz |
| 1 st | 6.35029318 kg |
| 1 st | 14 lb |
| 1 t | 1.102311311 US ton |
| 1 ct | 0.2 g |
| 1 oz t | 31.1034768 g |
| 1 tola | 11.6638038 g |
How to read your result
- The big number is your value in the unit you picked.
- The table shows the same weight in every unit.
Worked example
Example: 2 pound = 0.90718474 kg
- Inputs: Value: 2; From: Pound (lb); To: Kilogram (kg).
- Formula: Result = Value × (size of the “from” unit ÷ size of the “to” unit)
- Multiply by the number of kg in one lb 2 × 0.45359237 = 0.90718474 kg
- Result: 2 pound = 0.90718474 kg
- 1 lb = 0.45359237 kg
- 1 kg = 2.204622622 lb
Questions people ask
How do I convert kg to lbs in my head?
Double the kilograms and add 10% of the result. 70 kg → 140 + 14 = 154 lb (exact: 154.32).
How many pounds are in a stone?
Exactly 14 pounds, which is 6.35029318 kg.