Weight Converter
Convert between metric and imperial weight units instantly. Kilograms, pounds, ounces, stone, tonnes — all in one tool with instant results.
2.2046226
Pound (lb)
Related Calculators
How to Use the Weight Converter
Enter the weight in the Value field and choose the unit you are converting from. The converter instantly shows equivalents in all units. The highlighted row is your source unit.
Weight Units Explained
Weight (technically mass) is measured in the kilogram (kg) as the SI base unit. Note that in everyday use, "weight" and "mass" are used interchangeably, though they are technically different.
Metric units
- Milligram (mg) — 0.001 g. Used for medicine dosages and tiny quantities.
- Gram (g) — 0.001 kg. Food, chemistry, and small packages.
- Decagram (dag) — 10 g. Used in Central European cooking (e.g., 25 dag of butter).
- Kilogram (kg) — SI base unit. Body weight, groceries, luggage.
- Tonne (t) — 1,000 kg. Vehicles, cargo, and industrial loads.
Imperial & US customary units
- Ounce (oz) — 28.35 g. Food portions and precious metals (troy oz = 31.10 g).
- Pound (lb) — 16 oz = 453.59 g. Body weight in the US and UK.
- Stone (st) — 14 lb = 6.35 kg. Body weight in the UK and Ireland.
- Short ton (US ton) — 2,000 lb = 907.18 kg.
- Long ton (UK ton) — 2,240 lb = 1,016.05 kg.
Key Conversions
Worked Examples
Body weight: 70 kg to pounds and stone
70 × 2.2046 = 154.3 lbs. 70 ÷ 6.35029 = 11.02 stone (11 stone 0.3 lb).
Cooking: 250 g to ounces
250 × (1 ÷ 28.3495) = 8.82 oz. A standard cup of flour weighs about 125 g ≈ 4.4 oz.
Luggage limit: 23 kg to pounds
23 × 2.2046 = 50.7 lbs. Many airlines set a 23 kg checked baggage limit.
Cargo: 5 short tons to metric tonnes
5 × 907.185 = 4,535.9 kg = 4.536 tonnes.