Weight converters
Convert weight and mass between pounds, kilograms and grams.
About weight and mass conversion
Strictly speaking these converters deal with mass, but in everyday language it is weight: what a person, a parcel or a bag of flour "weighs". The metric side uses grams and kilograms; the imperial and US side uses ounces and pounds, and in Britain and Ireland the stone for body weight. The link between the systems is the international pound, defined as exactly 0.45359237 kg.
Conversion factors at a glance
| Unit | Equals |
|---|---|
| 1 ounce (oz) | 28.35 g |
| 1 pound (lb) | 16 oz = 453.6 g = 0.4536 kg |
| 1 stone (st) | 14 lb = 6.35 kg |
| 1 kilogram | 1 000 g = 2.205 lb = 35.27 oz |
| 1 gram | 0.0353 oz |
Which converter do I need?
Body weight. Pounds to kilograms in the US, stones to kilograms in the UK, and the reverse when reading a metric scale. Cooking and nutrition. Ounces to grams for recipes and portion sizes, grams to ounces for European recipes cooked with an American scale. Post and shipping. Pounds to grams and kilograms to pounds for carrier price bands. Babies. Grams to pounds for birth weights recorded in metric.
Two ounces, two pounds
The ounce on these pages is the avoirdupois ounce of 28.35 g, used for food, post and people. The troy ounce of 31.1 g is used only for precious metals. Likewise the fluid ounce is a volume, not a weight — for liquids, use the volume converters.
Common questions
How many pounds is 70 kg? 154.3 lb, or 11 st 0 lb. What is 150 lb in kg? 68 kg. How many grams in an ounce? 28.35 g. How many ounces in a pound? 16. How many pounds in a stone? 14. Is a kilogram heavier than a pound? Yes — a kilogram is 2.2 pounds.