Ounces to grams converter
1 Ounces (oz) = 28.34952 Grams (g)
How to convert ounces to grams
The everyday ounce (the avoirdupois ounce, used for food, parcels and body weight) is exactly 28.349523125 grams, so multiply ounces by 28.35 to get grams, or divide grams by 28.35 for ounces. There are 16 ounces in a pound, so 8 oz is 226.8 g and 16 oz (1 lb) is 453.6 g.
Fluid ounces are different. A fluid ounce measures volume, not weight: a US fl oz is 29.57 ml and a UK fl oz is 28.41 ml. For water the weight in grams is close to the millilitres, but flour, sugar and butter all weigh differently per cup or fluid ounce, so for baking a kitchen scale is more reliable than a volume conversion.
Gold and silver are priced in troy ounces of exactly 31.1034768 g, about 10% heavier than a normal ounce. Pick “Troy ounces” in the list above.
ounces to grams chart
| Ounces (oz) | Grams (g) |
|---|---|
| 0.5 | 14.17476 |
| 1 | 28.34952 |
| 2 | 56.69905 |
| 3 | 85.04857 |
| 4 | 113.3981 |
| 5 | 141.7476 |
| 6 | 170.0971 |
| 8 | 226.7962 |
| 10 | 283.4952 |
| 12 | 340.1943 |
| 16 | 453.5924 |
| 32 | 907.1847 |
Frequently asked questions
How many grams are in an ounce?
One ounce is 28.3495 grams. For quick kitchen maths, 1 oz ≈ 28 g and 4 oz ≈ 113 g.
How many ounces is 100 grams?
100 g is 3.527 ounces.
Is a fluid ounce the same as an ounce?
No. An ounce is a weight (28.35 g); a fluid ounce is a volume (29.57 ml in the US, 28.41 ml in the UK). They only roughly match for water.
Is a troy ounce the same as an ounce?
No. A troy ounce, used for gold, silver and other precious metals, is 31.1035 g, compared with 28.3495 g for a normal ounce.