About this weight converter
Weight, strictly mass, is measured in grams and kilograms in the metric system, in pounds and ounces in the US customary and British imperial systems, and in stone for body weight in the UK and Ireland. Ton means different things: a metric ton is 1,000 kg, a US short ton is 2,000 lb, and a UK long ton is 2,240 lb. Jewellers weigh gems in carats of 200 mg. This converter shows a weight in all of these units at once, using the exact definition of the pound (0.45359237 kg), and writes it as pounds and ounces and as stone and pounds, the way it is usually spoken.
How to convert weight
- Enter the weight. Type a number, or press an example such as 150 lb.
- Choose its unit. Pick the unit the number is in.
- Press Convert weight. Read the weight in every unit and copy the one you need.
Frequently asked questions
How many pounds are in a kilogram?
About 2.20462. One pound is exactly 0.45359237 kg, so 5 kg is about 11.02 lb and 70 kg is about 154.3 lb.
How many ounces are in a pound?
Sixteen. An ounce is about 28.35 grams, so 4 oz is about 113.4 g. Fluid ounces measure volume, not weight, and are a different unit.
What is a stone?
A British unit of 14 pounds, about 6.35 kg, still used for body weight in the UK and Ireland. 150 lb is 10 stone 10 lb.
What is the difference between a US ton and a metric ton?
A US (short) ton is 2,000 lb, about 907 kg. A metric ton, or tonne, is 1,000 kg, about 2,205 lb. A UK (long) ton is 2,240 lb, about 1,016 kg.