Ounces to Grams Converter (Weight)
Weight ounces ↔ grams. 1 oz = 28.3495 g exactly. Bidirectional.
Result
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How to use this calculator
- Pick direction (oz→g or g→oz).
- Enter amount.
- Read result and useful equivalents.
About this calculator
Ounce-to-gram conversion is a fixed factor: 1 oz (avoirdupois, the standard in US cooking) = 28.3495 g. Don't confuse with troy ounces (precious metals, 31.103 g) or fluid ounces (volume, ~29.6 mL). For cooking purposes, the avoirdupois ounce is what you want. Typical recipe weights translate cleanly: 8 oz ≈ 227 g, 4 oz ≈ 113 g (a half-stick of butter), 1 lb (16 oz) ≈ 454 g.
Frequently asked
Avoirdupois vs. troy ounce?+
Avoirdupois (28.35g) is for groceries. Troy (31.10g) is for precious metals. Always avoirdupois in cooking.
oz vs. fl oz?+
oz = weight; fl oz = volume. 1 fl oz of water = 1.04 oz weight (close, but only for water).
Why is 4 oz = "half a stick"?+
A standard US butter stick is 4 oz = 113 g. Two sticks = 1 cup. Convenient for baking.
Is 16 oz exactly 1 lb?+
Yes — that's the avoirdupois system. 1 lb = 16 oz = 453.592 g.
Should I use grams or ounces in recipes?+
Grams. Easier math, finer scale resolution, and most modern scales default to grams. Conversion takes 5 seconds.
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