ounces · weight · conversions
Grams to Ounces: A Simple Guide for Cooking and Baking
How to convert grams to ounces and back, the difference between weight ounces and fluid ounces, and a full reference table for common quantities.
Von Ali RazaAktualisiert 5 Min. Lesezeit
One ounce is 28.3495 grams. This is the easiest conversion in cooking, because both units measure mass — so unlike almost everything else on this site, the ingredient makes no difference whatsoever.
The arithmetic
- Grams to ounces: divide by 28.35.
- Ounces to grams: multiply by 28.35.
- For mental maths: divide grams by 28, or multiply ounces by 28. Under 2% error, fine for cooking.
| Grams | Ounces | Grams | Ounces |
|---|---|---|---|
| 10 g | 0.35 oz | 200 g | 7.05 oz |
| 25 g | 0.88 oz | 225 g | 7.94 oz |
| 50 g | 1.76 oz | 250 g | 8.82 oz |
| 75 g | 2.65 oz | 300 g | 10.58 oz |
| 100 g | 3.53 oz | 400 g | 14.11 oz |
| 113 g | 4 oz | 454 g | 16 oz (1 lb) |
| 130 g | 4.59 oz | 500 g | 17.64 oz |
| 150 g | 5.29 oz | 1,000 g | 35.27 oz (2.2 lb) |
Ounces to grams
| Ounces | Grams | Also |
|---|---|---|
| 1 oz | 28 g | — |
| 2 oz | 57 g | ½ stick butter |
| 4 oz | 113 g | 1 stick butter / ¼ lb |
| 8 oz | 227 g | 2 sticks / ½ lb |
| 12 oz | 340 g | ¾ lb |
| 16 oz | 454 g | 1 lb |
| 32 oz | 907 g | 2 lb |
The trap: weight ounces vs fluid ounces
These are different units that share a name, and confusing them is the only real difficulty here.
- A weight ounce (oz) measures mass: 28.35 grams.
- A fluid ounce (fl oz) measures volume: 29.57 millilitres.
They produce similar numbers for water — 8 fl oz of water weighs about 8.3 oz — which is exactly why the confusion persists. For anything else they diverge sharply: 8 fl oz of honey weighs 12 oz, and 8 fl oz of flour weighs about 4.2 oz.
Where ounces still turn up
- US butter: sold in 4 oz sticks, 16 oz pounds.
- Chocolate: often sold in 4 oz, 8 oz or 12 oz bars and bags.
- Cream cheese: the US standard block is 8 oz (227 g).
- Canned goods: 14.5 oz and 15 oz cans are standard.
- Older British cookbooks: pre-metric recipes are entirely in ounces.
Troy ounces, briefly
If you ever see an ounce given as 31.1 grams, that is a troy ounce, used for precious metals. It has no place in a kitchen. Every cooking recipe means the avoirdupois ounce of 28.35 g.
Practical advice
Most digital kitchen scales switch between grams and ounces with one button. Rather than converting a recipe, switch the scale — it is faster and removes the arithmetic entirely.
Where a recipe mixes systems, standardise on grams. Grams are smaller, so they give finer resolution, and they avoid the fractional-ounce awkwardness that comes from working in sixteenths of a pound.