Ounces to Grams: oz to g Converter
Convert ounces to grams instantly. 1 avoirdupois ounce equals exactly 28.3495 grams by international standard. Enter any value in ounces and see the gram equivalent with a quick reference table. Useful for translating US recipes to metric scales, understanding nutrition labels, and converting between American and European weight units.
Ounces to grams
1 Ounce = 28.3495 Gram
Ounces to grams reference table
| Ounces | Grams |
|---|---|
| 0.5 oz | 14.17 g |
| 1 oz | 28.35 g |
| 2 oz | 56.7 g |
| 3 oz | 85.05 g |
| 4 oz | 113.4 g |
| 5 oz | 141.75 g |
| 6 oz | 170.1 g |
| 8 oz | 226.8 g |
| 10 oz | 283.5 g |
| 12 oz | 340.2 g |
| 16 oz | 453.59 g |
| 32 oz | 907.18 g |
About ounces and grams
Avoirdupois vs troy
"Ounce" in everyday US use means the avoirdupois ounce (28.3495 g). "Troy ounce" is a separate, heavier unit (31.1035 g) used for precious metals. A 1 oz gold coin is 31.1 g, not 28.3 g. This 10 percent difference creates real value gaps in gold trading. The calculator on this page uses the avoirdupois ounce.
Cooking with imperial recipes
American recipes specify ingredients in ounces and pounds; European and Australian recipes use grams. To follow an American recipe with a metric scale, convert: 8 oz of butter = 227 g, 4 oz of chocolate = 113 g, 1 lb of flour = 454 g. Round to easy numbers (225, 115, 450) for quick cooking; use exact values only when precision matters (baking).
The pound and the ounce
1 pound = 16 ounces by definition. 1 pound = 453.59 g exactly (by the international yard and pound agreement of 1959). So 1 ounce = 1/16 of 453.59 = 28.35 g. The pound itself is the foundation; the ounce is a subdivision.
Practical examples
Common food weights: small chicken breast 4-6 oz (113-170 g), 1 large egg 2 oz (57 g), 1 stick of US butter 4 oz (113 g), can of tuna 5-6 oz (142-170 g), block of cream cheese 8 oz (227 g). Mailing: a US letter under 1 oz (28 g) qualifies for standard postage; over that price increases.
Multiply ounces by 28.3495 to get grams. So 8 oz = 226.8 g, and 16 oz (1 lb) = 453.6 g. For quick mental math, multiply by 28.
1 avoirdupois ounce (the standard US ounce for food, mail, and body weight) = 28.3495 g. For cooking purposes, 28 g is close enough.
8 oz = 226.8 g. This is the size of a typical small block of cream cheese or about half a US pound.
1 pound = 16 ounces = 453.59 g (often rounded to 454 g or 450 g for kitchen use). The kilogram is 2.205 lb.
No. Gold and other precious metals use the troy ounce (31.1035 g), which is heavier than the avoirdupois ounce (28.3495 g). The calculator uses the avoirdupois ounce.
The factor 28.3495 g per ounce is the international standard. Results show 6 significant figures, more than any kitchen scale or food label would use.
Reading US recipes and converting to grams for metric measuring tools. Reading nutrition labels (US labels often per ounce, European per gram). Shipping weights when sending packages between metric and imperial countries. Buying meat at the deli in countries that use ounces by default.
A different unit. The fluid ounce (fl oz) measures volume (29.57 mL for US fluid oz). The ounce (oz) without "fluid" measures weight. Recipes that say "8 oz" usually mean 8 fluid ounces of liquid (volume) or 8 ounces by weight for solids; check the context.
1 oz = 28 g, 2 oz = 57 g, 3 oz = 85 g, 4 oz = 113 g, 6 oz = 170 g, 8 oz = 227 g, 12 oz = 340 g, 16 oz (1 lb) = 454 g. Round to whole grams for kitchen use.
Multiply ounces by 30 for a rough estimate (overestimates by about 6 percent). So 8 oz is "about 240 g" by mental math (actual 227 g). Multiply by 28 for closer accuracy.
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