Grams to Ounces Converter
Divide a mass in grams by 28.349523125 to get ounces. 100 g = 3.52739619496 oz, so a 100 g bar of chocolate weighs about three and a half ounces.
This converter uses the international avoirdupois ounce, the ounce used for ordinary weights such as food and parcels. It is not the fluid ounce and not the troy ounce.
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(opens in a new tab)How to convert grams to ounces
Formula: ounces = grams / 28.349523125
The constant is exact by definition: 1 ounce = 28.349523125 grams. It is not a rounded approximation.
An avoirdupois ounce is a sixteenth of a pound. The pound is exactly 0.45359237 kg, so an ounce is exactly 28.349523125 grams. Dividing by that does not end, so most results are rounded to 12 significant digits.
Worked example: 100 g to ounces
The answer below is shown to 12 significant digits. The full value has more digits, so treat the displayed figure as rounded.
Convert 100 g
Input
100 g
Output
100 / 28.349523125 = 3.52739619496 oz
Common grams to ounces conversions
| Grams (g) | Ounces (oz) |
|---|---|
| 1 g | 0.0352739619496 oz |
| 10 g | 0.352739619496 oz |
| 25 g | 0.88184904874 oz |
| 50 g | 1.76369809748 oz |
| 100 g | 3.52739619496 oz |
| 250 g | 8.8184904874 oz |
| 500 g | 17.6369809748 oz |
| 1000 g | 35.2739619496 oz |
When you need to convert grams to ounces
- Food and packaging: a product labeled in grams, compared with a recipe or a price per ounce.
- Recipes: dry ingredients weighed on a metric kitchen scale for a US recipe that gives weights in ounces.
- Shipping: a parcel weighed in grams, for a carrier that charges by the ounce.
- Product specifications: the weight of a phone, a lens or a tool listed in grams.
Things worth knowing
- A fluid ounce (fl oz) is a volume, not a weight, and the US and imperial fluid ounces differ. This page does not convert fluid ounces.
- Gold, silver and other precious metals are priced in troy ounces. A troy ounce is about 31.1 grams, heavier than the ounce used here, so do not use this page for metal prices.
Converting back and related converters
To go the other way, use the Ounces to Grams Converter, which applies grams = ounces × 28.349523125. For any other pair of units, open the Unit Converter, or browse every unit converter.
- KG to LBS Converter: for heavier items weighed in kilograms.
- LBS to KG Converter: for weights given in pounds.
Frequently asked questions
How many ounces are in 100 grams?
100 g = 3.52739619496 oz. The figure does not end, so it is rounded when written out in decimals.
Are these fluid ounces?
No. These are ounces of weight (mass). Fluid ounces measure volume, so how many grams a fluid ounce holds depends on what is in it.
Is this a troy ounce conversion?
No. This page uses the avoirdupois ounce of exactly 28.349523125 grams. The troy ounce used for gold and silver is a different, heavier unit.
How many ounces is a kilogram?
1000 g = 35.2739619496 oz. That is a little over two pounds, at 16 ounces to the pound.