Weight converter
Type a value and pick the starting unit: pounds, ounces, stone, kilograms, grams and hectograms all update in real time.
Handy references
| 1 pound | 453.6 g |
| 1 ounce | 28.35 g |
| 1 stick of butter (US) | 4 oz ≈ 113 g |
| 1 stone (body weight, UK) | 14 lb = 6.35 kg |
| 1 kilogram | 2.205 lb |
Pounds, ounces and stone: how the imperial units fit together
One pound (lb) is exactly 453.6 grams and splits into 16 ounces of 28.35 grams each — so the "8 oz of butter" in a recipe is about 227 grams, or two US sticks. In the UK, body weight is usually given in stone: 1 stone equals 14 pounds (6.35 kg), so someone who weighs "11 stone" is about 154 lb or 70 kg. One thing to watch out for: the weight ounce is not the fluid ounce (fl oz), which measures volume and equals roughly 29.6 ml.
Going metric: kilograms, grams and the rarely-seen hectogram
The metric system scales by powers of ten, which makes mental math easy: 1 kilogram is 1,000 grams and about 2.2 pounds, so a quick trick is to double the kilograms and add 10% to get pounds. The hectogram (100 grams, roughly 3.5 oz) is almost never used in English-speaking countries, but in Italy it is the everyday unit at the deli counter — handy to know if you ever shop for prosciutto abroad, where prices are often listed per hectogram rather than per kilo.