Ounces to Grams Converter

Enter a weight in ounces to see how many grams and pounds it is.

Updated October 27, 2026

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Formula

grams = ounces x 28.349523125

pounds = ounces / 16

Worked example

8 oz x 28.349523125 = 226.796185 g, and 8 / 16 = 0.5 lb.

Conversion table

Ounces	Grams	Pounds
1	28.35	0.0625
4	113.398	0.25
8	226.796	0.5
12	340.194	0.75
16	453.592	1

Frequently asked questions

How many grams are in an ounce?

One avoirdupois ounce is exactly 28.349523125 grams, usually rounded to 28.35 g. Multiply ounces by 28.35 for a quick answer: 4 oz is about 113.4 g.

How do I convert ounces to grams?

Multiply the ounces by 28.349523125. For example 8 oz x 28.349523125 = 226.796185 g.

How many ounces are in a pound?

There are exactly 16 ounces in a pound, and a pound is 453.59237 g, so 16 oz is 453.59237 g.

Is a fluid ounce the same as a weight ounce?

No. This converter is for weight ounces. A fluid ounce measures volume, and its weight depends on the liquid, so it cannot be converted to grams without knowing the density.

How we calculate

Ounces to Grams Converter

Formula

Worked example

Conversion table

Frequently asked questions

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