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Ounces to Grams Converter

Convert ounces to grams and grams to ounces instantly. Bidirectional weight converter with formula and common values.

Ounces to Grams: 1 oz equals 28.349523 g. To convert ounces to grams, multiply by 28.349523 (g = oz × 28.34952313). For example, 10 oz = 283.495231 g.

8.5 oz = 241 g

g = oz × 28.34952313

How to Convert Ounces to Grams

To convert from ounces to grams, multiply the value by 28.349523. The conversion is linear, meaning doubling the input doubles the output.

Conversion Formula

  • Ounces to Grams: g = oz × 28.34952313
  • Grams to Ounces: oz = g ÷ 28.34952313
Ounces to Grams conversion scale — a dual ruler showing 1 oz equals 28.3495 g.
Ounces to Grams conversion scale (oz to g).

Ounces to Grams Conversion Chart

Ounces (oz)Grams (g)
0.12.834952
0.257.087381
0.514.174762
128.349523
256.699046
385.048569
5141.747616
10283.495231
20566.990463
25708.738078
501417.476156
1002834.952313
2507087.380781
100028349.523125

Understanding the Units

What is an Ounce?

The avoirdupois ounce equals exactly 28.349523125 grams, or 1/16 of a pound.

Common contexts: cooking (US), postage, precious metals.

What is a Gram?

A gram is one thousandth of a kilogram (1 g = 0.001 kg).

From the Greek gramma, a small weight in Late Antiquity.

Common contexts: cooking, pharmacy, lab work.

Real-World Reference Points

Item Ounces (oz) Grams (g)
A slice of bread128.3495
A AA battery0.8524.0971

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FAQ

How many grams in an ounce?

One avoirdupois ounce equals approximately 28.3495 grams.

How do I convert ounces to grams?

Multiply the ounce value by 28.3495. For example, 8.5 oz = 8.5 × 28.3495 = 240.97 g.

Is a troy ounce different from a regular ounce?

Yes. A troy ounce (used for precious metals) weighs 31.1035 g, while a regular avoirdupois ounce weighs 28.3495 g. This converter uses avoirdupois ounces.

When is this conversion most useful?

Very common in cooking (converting US recipes to metric), nutrition labeling, and postal weight calculations.

How many grams are in 1 ounc?

1 oz equals 28.349523 g.

How do you convert ounces to grams?

Multiply the ounc value by 28.349523. Formula: g = oz × 28.34952313.

How many grams are in 5 ounces?

5 oz = 141.747616 g.

How do you convert grams back to ounces?

Use the inverse formula: oz = g ÷ 28.34952313. For example, 1 g = 0.035274 oz.

What is the difference between Ounc and Gram?

The avoirdupois ounce equals exactly 28.349523125 grams, or 1/16 of a pound. A gram is one thousandth of a kilogram (1 g = 0.001 kg).