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Ounce to Gram

Convert ounce (oz) to gram (g) — with the exact factor, a quick-reference table and a free converter that works offline.

1 oz = 28.34952 g

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Conversion table

Ounce (oz)Gram (g)
1 oz28.34952 g
2 oz56.69905 g
5 oz141.7476 g
10 oz283.4952 g
20 oz566.9905 g
50 oz1,417.476 g
100 oz2,834.952 g
500 oz14,174.76 g

How the conversion works

Both units measure mass. One ounce equals exactly 28.34952 g, so multiply by that factor to convert.

FAQ

How many grams in a ounce?

1 oz = 28.34952 g.

How do I convert ounce to gram?

Multiply the ounce value by 28.34952. For example, 10 oz × 28.34952 = 283.4952 g.

Where does the factor come from?

The conversion factor is defined in NIST SP 811; both units are mass units converted through kilogram.

Related conversions

Gram to Ounce Kilogram to Pound Pound to Kilogram Kilogram to Stone (UK)

Conversion factors: NIST SP 811. Computed by the same engine that powers the app.

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