Ounce to Gram

Convert ounce to gram instantly. Type in either field — results update live.

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Weight & Mass Ounce Gram

1 ounce = 28.349523125 grams

From

Format

Selected oz values converted to g using the exact factor from this tool.

Exact conversion factors in both directions, plus a worked example.

1 oz = 28.349523125 g

1 g = 0.0352739619 oz

To convert ounce to gram, multiply by 28.349523125.

To convert gram to ounce, multiply by 0.0352739619.

Example: convert 15 oz to g

15 × 28.349523125 = 425.242846875 g

Short background on the units used in this conversion.

An avoirdupois ounce is one sixteenth of a pound, or exactly 28.349523125 grams.

Ounces measure packaged food, postal rates, and recipe amounts in US customary cooking.

A gram is one thousandth of a kilogram — the everyday metric unit for small masses and recipe ingredients.

Grams appear on nutrition labels, jewelry scales, laboratory balances, and European cooking measurements.

How many grams are in one ounce?

One ounce equals 28.349523125 grams. Multiply your ounces value by 28.349523125 to convert to grams.

What is the conversion formula?

g = oz × 28.349523125

The reverse is oz = g × 0.0352739619, using the same exact factors as this converter.

Is this Ounce to Gram converter private?

Yes. All calculations run locally in your browser. Nothing you type is sent to a server.

Jump to any weight & mass conversion starting from ounce — including the reverse direction and every other unit in our dataset.