Ounces to Grams Converter

Common oz to g conversions

How this conversion works

1 ounce = 28.34952313 grams. Multiply ounces by 28.34952313.

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What you are converting

Ounce (oz)

An avoirdupois unit of weight used mainly in the United States, equal to one sixteenth of a pound. A common real-world anchor is a stick of butter, which weighs about 4 ounces.

Gram (g)

A metric unit of mass equal to one thousandth of a kilogram. A standard paperclip weighs roughly 1 gram, which makes it a convenient everyday reference point.

Why convert and when you would use this

Home cooks following American recipes often need ounce measurements converted to grams for kitchen scales sold in metric countries. Online sellers also convert package weights from ounces to grams to calculate international shipping costs, since most postal services quote rates in metric units.

Worked example

To convert 5 ounces to grams, multiply 5 by 28.34952313, giving 141.74761565 grams. Rounded to two decimals, 5 oz equals 141.75 g. For a full pound, 16 ounces multiplied by 28.34952313 yields 453.59237008 grams, which rounds to 453.59 g.

Rounding and accuracy

Use two decimal places for cooking, postage, and general shopping, because consumer scales rarely resolve beyond that. Keep four or more decimals for laboratory work, supplement dosing, or precious metal calculations where small errors compound. When converting a chain of values, round only the final result, never intermediate steps.

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