To convert grams to ounces, divide by 28.3495 (or multiply by 0.035274). So 100 g = 3.527 oz and 500 g = 17.64 oz. The ounce used here is the avoirdupois ounce - the standard for food and general goods in the US and UK.
- 1 oz (avoirdupois) = 28.349523125 g - exact, derived from the pound definition.
- 100 g = 3.527 oz. 250 g = 8.818 oz. 500 g = 17.64 oz.
- Quick mental estimate: divide grams by 28 (result is 1.2% high).
- Note: troy ounces (used for precious metals) are different - 1 troy oz = 31.1035 g.
How to Use This Converter
Type any grams value in the g field and the ounces result appears instantly. You can also type in the oz field to convert back to grams. This converter uses avoirdupois ounces - the standard for food and everyday goods.
How Do You Convert Grams to Ounces?
Divide grams by 28.3495 (or multiply by 0.035274). The exact value is 28.349523125 g/oz, derived from the international pound: 1 lb = 453.59237 g, and 1 lb = 16 oz, so 1 oz = 453.59237 ÷ 16 = 28.3495... g.
$$\text{oz} = \text{g} \div 28.3495$$
Worked examples: 100 g = 3.527 oz. 200 g = 7.055 oz. 250 g = 8.818 oz. 500 g = 17.637 oz. 1000 g = 35.274 oz.
How Do You Convert Ounces to Grams?
Multiply ounces by 28.3495. See the dedicated ounces to grams converter for an oz-first reference table.
$$\text{g} = \text{oz} \times 28.3495$$
Worked examples: 4 oz = 113.4 g. 8 oz = 226.8 g. 16 oz = 453.6 g (= 1 lb).
Grams to Ounces Reference Table
Common cooking and food weight values converted using the exact factor 1 ÷ 28.3495 oz/g:
| Grams (g) | Ounces (oz) | Common context |
|---|---|---|
| 25 g | 0.882 oz | Small spice portion |
| 50 g | 1.764 oz | - |
| 100 g | 3.527 oz | Common food label serving |
| 150 g | 5.291 oz | - |
| 200 g | 7.055 oz | - |
| 250 g | 8.818 oz | Half-pound approximately |
| 300 g | 10.582 oz | - |
| 400 g | 14.110 oz | - |
| 450 g | 15.873 oz | Close to 1 lb |
| 500 g | 17.637 oz | - |
| 1000 g | 35.274 oz | 1 kg |
When Do You Need to Convert Grams to Ounces?
Grams and ounces appear together most often in cooking and food contexts, where metric and imperial recipes co-exist. Common use cases:
- Cooking and baking - US recipes use oz; European and most international recipes use grams. Converting between them is routine when following cross-regional recipes.
- Food labels - US food nutrition labels list serving sizes in oz; metric labels list grams. Converting helps compare products from different markets.
- Postal and shipping - small parcel weights are listed in grams internationally but in oz in the US for lightweight items.
- Chemistry and lab work - reagent quantities in older US protocols are often in oz; modern lab work uses grams.
Frequently Asked Questions
How many ounces is 100 grams?
100 grams equals 3.527 oz. Divide 100 by 28.3495: 100 ÷ 28.3495 = 3.5274 oz. This is a common food label serving size in many countries.
How do you convert grams to ounces?
Divide by 28.3495 or multiply by 0.035274. Quick mental check: divide by 28 (1.2% high). For 200 g: 200 ÷ 28 = 7.14 oz (actual: 7.055 oz).
How many ounces is 500 grams?
500 grams equals 17.637 oz. This is just over 1.1 lbs (17.637 ÷ 16 = 1.102 lb), a common weight for packaged food items.
How many grams is 1 ounce?
1 avoirdupois ounce = 28.3495 g exactly (rounded from 28.349523125 g). Note: a troy ounce, used for gold and silver, is 31.1035 g - do not confuse the two.