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Free Grams to Ounces Converter

Convert grams to ounces and back — handy for cooking, baking, and parcels. Type in either box for an instant result.

1 g = 0.0353 oz

Pick any units and edit either box — it converts instantly in your browser.

Quick answer

To convert grams to ounces, divide the number of grams by 28.349523125 (or multiply by 0.0352739619), because one ounce is 28.349523125 grams. For example, 100 g ≈ 3.53 oz. To go back, multiply ounces by 28.349523125.

Formula & method

ounces = grams ÷ 28.349523125
  • grams — mass in grams
  • 28.349523125 — grams in one avoirdupois ounce

These are weight (avoirdupois) ounces, not fluid ounces, which measure volume.

Common grams to ounces

Grams (g)Ounces (oz)
10 g0.35 oz
28.35 g1.00 oz
50 g1.76 oz
100 g3.53 oz
250 g8.82 oz
500 g17.64 oz
1000 g35.27 oz

Examples

Example 1: 100 grams
Input
100 g
Result
3.5274 oz
Why
100 ÷ 28.349523125 = 3.5274.
Example 2: About one ounce
Input
28.35 g
Result
≈ 1 oz
Why
28.349523125 g is exactly one ounce.
Example 3: Half a kilogram
Input
500 g
Result
17.637 oz
Why
500 ÷ 28.349523125 = 17.637.

When to use this tool

  • Following a recipe written in the other unit.
  • Weighing mail or small parcels for postage.
  • Converting nutrition or ingredient amounts.

Common mistakes

  • Confusing weight ounces with fluid ounces. Grams measure mass; fluid ounces measure volume.
  • Using 30 g per ounce as a shortcut for precise recipes — the real value is 28.35 g.
  • Forgetting that 16 ounces make a pound, not 10.

Frequently asked questions

How do I convert grams to ounces?

Divide the grams by 28.349523125, or multiply by 0.0352739619. For example, 250 g ÷ 28.35 ≈ 8.82 oz.

How many grams are in an ounce?

An avoirdupois ounce is 28.349523125 grams. A quick approximation is 28.35 g.

Are these the same as fluid ounces?

No. This converts weight in grams to weight in ounces. Fluid ounces measure volume and don’t convert directly to grams without knowing the substance.

How many ounces are in a pound?

Exactly 16 ounces make one pound, which is about 453.6 grams.

How do I convert ounces back to grams?

Multiply the ounces by 28.349523125, or just type a value into the ounces box here.

Can I use this to convert fluid ounces (volume) to grams?

No. Fluid ounces measure volume; grams measure weight. To convert fluid ounces to grams, you need to know the substance's density. For example, 1 fl oz of water is about 30 g, but 1 fl oz of oil weighs differently.

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  • ✓ Formula and method shown above
Last updated: How we calculateReport a correctionDisclaimer

Provided “as is” for general information only — results may be inaccurate, so verify before you rely on them. No warranty; use at your own risk.

Built and reviewed by HIFreeTools against the formula shown above and any authoritative references cited on this page. See our methodology and editorial standards.

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