How many grams are in an ounce?

One ounce (avoirdupois, the weight ounce used for dry ingredients) is exactly 28.349523125 grams, usually rounded to 28.35 g. This is the mass ounce, not the fluid ounce: a fluid ounce measures volume, an ounce measures weight, and the two are only equal for water by coincidence.

How do I convert grams to ounces for baking?

Divide the gram value by 28.35. For example, 250 g of flour is 250 / 28.35 = 8.82 oz, and 500 g is 17.64 oz. European and Australian recipes usually weigh ingredients in grams, while many US recipes use ounces, so converting lets you follow either without a second scale.

What is the difference between a weight ounce and a fluid ounce?

A weight ounce (oz) measures mass and equals 28.35 g. A US fluid ounce (fl oz) measures volume and equals 29.57 mL. Arch Convert keeps them separate: the Weight tab handles grams to ounces by mass, and the Capacity tab handles fluid ounces by volume, so you never accidentally swap the two.

Grams to Ounces Converter (Weight)

1 ounce equals 28.35 grams (exactly 28.349523125 g). To go from grams to ounces, divide by 28.35. This is the weight ounce used for dry ingredients, not the fluid ounce used for liquids.

Open the grams to ounces calculator →

Worked example

A European cake recipe calling for 250 g of flour means 250 / 28.35 = 8.82 oz. The same recipe's 100 g of butter is 100 / 28.35 = 3.53 oz. Weigh in whichever unit your scale reads and let the other update.

Conversion reference

Grams	Ounces
10 g	0.353 oz
25 g	0.882 oz
50 g	1.764 oz
100 g	3.527 oz
250 g	8.818 oz
500 g	17.64 oz
1000 g (1 kg)	35.27 oz

Most of the world weighs baking ingredients in grams, while many US recipes list ounces. Arch Convert's Weight tab shows grams, ounces, kilograms, and pounds in sync (with milligrams available via the Units menu), so you can follow any recipe with one scale. The ounce here is the avoirdupois weight ounce (28.35 g) and is kept distinct from the fluid ounce on the Capacity tab, which measures volume.

Frequently asked

How many grams are in an ounce?: One ounce (avoirdupois, the weight ounce used for dry ingredients) is exactly 28.349523125 grams, usually rounded to 28.35 g. This is the mass ounce, not the fluid ounce: a fluid ounce measures volume, an ounce measures weight, and the two are only equal for water by coincidence.
How do I convert grams to ounces for baking?: Divide the gram value by 28.35. For example, 250 g of flour is 250 / 28.35 = 8.82 oz, and 500 g is 17.64 oz. European and Australian recipes usually weigh ingredients in grams, while many US recipes use ounces, so converting lets you follow either without a second scale.
What is the difference between a weight ounce and a fluid ounce?: A weight ounce (oz) measures mass and equals 28.35 g. A US fluid ounce (fl oz) measures volume and equals 29.57 mL. Arch Convert keeps them separate: the Weight tab handles grams to ounces by mass, and the Capacity tab handles fluid ounces by volume, so you never accidentally swap the two.