One avoirdupois ounce is exactly 28.349523125 g. Kitchen scales, postage and nutrition labels switch between grams and ounces; precious metals use the heavier troy ounce (31.1 g).
How to use the Grams to Ounces Converter
- Type the number of grams into the Grams field. Decimals such as 50 are fine.
- Read the answer in Ounces – it updates as you type, with no button to press.
- To convert the other way, type into Ounces and the grams are recalculated.
- Press Copy results to copy both values with the page title, or Copy link to share this exact conversion.
This page converts only g ⇄ oz. Need a different unit? Use the general weight converter, where you can choose any “from” and “to” unit.
How it works
Both units measure weight, so they are always in the same ratio: one gram equals 0.035273962 ounces. The calculator multiplies the number of grams you type by 0.035273962 to give ounces, and when you type into the ounces field it divides by the same factor to give grams. Because the ratio never changes, doubling the grams always doubles the ounces. Results are calculated at full precision and rounded only for display (up to eight decimal places, with very large or small values shown in scientific notation).
How to convert grams to ounces
- Write down the value in grams, for example 100 g.
- Multiply by the conversion factor 0.035273962 (because 1 gram = 0.035273962 oz).
- 100 × 0.035273962 = 3.5273962 oz.
- To go back from ounces to grams, divide by 0.035273962 – or multiply by 28.349523.
g to oz conversion table
| Grams | Ounces | Ounces | Grams |
|---|---|---|---|
| 1 g | 0.035273962 oz | 1 oz | 28.349523 g |
| 5 g | 0.17636981 oz | 2 oz | 56.699046 g |
| 10 g | 0.35273962 oz | 5 oz | 141.74762 g |
| 25 g | 0.88184905 oz | 10 oz | 283.49523 g |
| 28.35 g | 1.0000168 oz | 20 oz | 566.99046 g |
| 50 g | 1.7636981 oz | 50 oz | 1,417.4762 g |
| 125 g | 4.4092452 oz | 100 oz | 2,834.9523 g |
| 200 g | 7.0547924 oz | 1,000 oz | 28,349.523 g |
| 250 g | 8.8184905 oz | ||
| 454 g | 16.014379 oz | ||
| 500 g | 17.636981 oz | ||
| 1,000 g | 35.273962 oz |
What is a gram?
A gram is one thousandth of a kilogram. Recipes, nutrition labels, postage and jewellery weights use grams in metric countries.
What is an ounce?
The avoirdupois ounce is 1/16 of a pound, exactly 28.349523125 g. It is used for food, postage and parcels. Do not confuse it with the fluid ounce (volume) or the troy ounce (precious metals).
Quick mental conversion
For a fast estimate, multiply grams by about 0.035 to get ounces; the error is about 0.8%. Use the calculator above when you need the exact figure.
Common mistakes to avoid
Confusing fluid ounces (volume) with ounces (weight), using troy ounces for food or regular ounces for gold, and mixing u.s. short tons, uk long tons and metric tonnes.
Formula
1 g = 0.035273962 oz1 oz = 28.349523 goz = g × 0.035273962Worked example
Inputs — Grams: 100 g.
Results — Ounces = 3.52739619 oz.
Frequently asked questions
How many ounces is 100 g?
About 3.53 oz.
Is a troy ounce heavier?
Yes, about 10% heavier than a regular ounce.
How do I convert grams to ounces?
Multiply the number of grams by 0.035273962. For example, 100 g × 0.035273962 = 3.5273962 oz.
How do I convert ounces back to grams?
Divide by 0.035273962 (or multiply by 28.349523), or simply type the value into the ounces field above.
What is 10 g in ounces?
10 g = 0.35273962 oz.
What is 5 g in ounces?
5 g = 0.17636981 oz.
Is this conversion exact?
Yes. The factor comes from the official definitions of both units (NIST and the SI), so the only difference you may see is rounding in the last displayed digit.
Can I convert to other units on this page?
This page converts only between grams and ounces. To pick any weight unit, use the general weight converter linked under Related calculators.
What formula does the Grams to Ounces Converter use?
1 g = 0.035273962 oz.