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Ounces to Grams Converter

Convert ounces to grams instantly with our free weight converter. 1 ounce = 28.349523 g — type any value below and the result updates live.

Ounces → Grams⇄ Swap: Grams → Ounces
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Ounces to Grams Formula

Grams = Ounces × 28.349523 (Ounces = Grams × 0.035274)

Weight conversion spans metric mass (milligrams, grams, kilograms, metric tons) and the US customary units (ounces, pounds, stone) used for body weight, groceries, and shipping.

Ounces to Grams Conversion Table

OuncesGrams
1 oz=28.349523 g
2 oz=56.699046 g
5 oz=141.747616 g
10 oz=283.495231 g
25 oz=708.738078 g
50 oz=1,417.476156 g
100 oz=2,834.952313 g

About Ounces and Grams

An avoirdupois ounce is exactly 28.349523125 grams (1/16 of a pound). The US unit for packaged food and postal weights.

A gram is one-thousandth of a kilogram — about the mass of a paperclip. The base metric unit for food and small goods.

Frequently Asked Questions

How many grams are in one ounce?
One ounce equals 28.349523 grams. Multiply any ounces value by 28.349523 to convert it.
What is the formula for converting ounces to grams?
Grams = Ounces × 28.349523. To reverse it: ounces = grams × 0.035274.
How do I convert grams back to ounces?
Divide the grams value by 28.349523 (equivalently, multiply by 0.035274). Or use our grams-to-ounces converter going the other way.
Which is bigger, a ounce or a gram?
A ounce is bigger — one ounce equals 28.349523 grams.