Precision unit conversion
Weight conversions trip people up more than most, mainly because the UK still uses stone for body weight while recipes, parcels and gym plates are usually in kilograms, grams, pounds or ounces. Here's how they all relate.
The kilogram is the base metric unit, with grams, milligrams and tonnes scaling by powers of ten. Imperial weight is more layered: 16 ounces make a pound, 14 pounds make a stone, and — confusingly — a "ton" means different things depending on where you are. A UK (long) ton is 2,240 lb, while a US (short) ton is 2,000 lb.
| Convert | Result |
|---|---|
| 1 kilogram | 2.20462 lb |
| 1 pound (lb) | 0.453592 kg (16 oz) |
| 1 stone | 6.35029 kg (14 lb) |
| 1 ounce | 28.3495 g |
| 1 UK ton (long) | 1,016.05 kg |
| 1 US ton (short) | 907.185 kg |
| 1 tonne (metric) | 2,204.62 lb (0.9842 UK ton) |
kg → lb: multiply by 2.20462. lb → kg: divide by 2.20462 (or multiply by 0.453592). Stone → kg: multiply by 6.35029. kg → stone: divide by 6.35029. To convert a body weight like "11 stone 6 lb" to kg: (11 × 14 + 6) × 0.453592.
The full converter handles kilograms, grams, milligrams, tonnes, ounces, pounds, stone, and both UK and US tons, with one-tap shortcuts for the most common kg↔lb and stone↔kg conversions.
Open Weight converter →Multiply kilograms by 2.20462 to get pounds. For example, 10 kg is about 22.05 lb.
One stone is 6.35029 kg. Fourteen pounds make a stone, so a stone is also 14 × 0.453592 kg.
No. A UK (long) ton is 2,240 lb (1,016.05 kg), while a US (short) ton is 2,000 lb (907.185 kg). A metric tonne (1,000 kg) sits between the two.
One ounce is 28.3495 grams. This is the standard avoirdupois ounce used for everyday weight — precious metals use a different, heavier troy ounce.