How do I convert ounces to grams?

Multiply the ounce value by 28.3495. So x oz × 28.3495 = the equivalent in g.

What is 10 ounces in grams?

10 ounces equals 283.495 grams.

What is 100 ounces in grams?

100 ounces equals 2834.95 grams.

How do I convert back from grams to ounces?

Multiply the gram value by 0.035274. For example, 1 g = 0.035274 oz.

Is the ounce bigger than the gram?

Yes. 1 ounce is larger than 1 gram — specifically 28.3495 times larger.

Are these conversion factors exact?

Yes. Since the 1959 international yard and pound agreement, imperial/US units are defined exactly in terms of metric units, so the factor used here (28.3495) is exact within IEEE 754 double precision.

Ounces to Grams Converter

1 oz = 28.3495 g

1 ounce equals 28.3495 grams. To convert ounces to grams, multiply the ounce value by 28.3495. For quick reference: 1 oz = 28.3495 g, 5 oz = 141.748 g, 10 oz = 283.495 g, 100 oz = 2834.95 g.

From

28.3495

FormulaGrams = Ounces × 28.3495

Quick

How to convert ounces to grams

Take your value
Start with your value in ounces.
Multiply by 28.3495
Multiply the ounce value by 28.3495. This is the exact conversion factor from ounces to grams.
Read the result
The product is your value in grams. For example, 5 oz × 28.3495 = 141.748 g.

Conversion formula

The exact factor from ounces to grams is 28.3495.

Grams = Ounces × 28.3495

Ounces to Grams conversion table

Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.

Conversion table from ounces to grams
Ounces (oz)	Grams (g)
0.1 oz	2.835 g
0.25 oz	7.0874 g
0.5 oz	14.175 g
1 oz	28.35 g
1.5 oz	42.524 g
2 oz	56.699 g
2.5 oz	70.874 g
3 oz	85.049 g
4 oz	113.4 g
5 oz	141.75 g
6 oz	170.1 g
7 oz	198.45 g
8 oz	226.8 g
9 oz	255.15 g
10 oz	283.5 g
12 oz	340.19 g
15 oz	425.24 g
18 oz	510.29 g
20 oz	566.99 g
25 oz	708.74 g
30 oz	850.49 g
35 oz	992.23 g
40 oz	1134 g
45 oz	1275.7 g
50 oz	1417.5 g
60 oz	1701 g
70 oz	1984.5 g
75 oz	2126.2 g
80 oz	2268 g
90 oz	2551.5 g
100 oz	2835 g
120 oz	3401.9 g
125 oz	3543.7 g
150 oz	4252.4 g
175 oz	4961.2 g
180 oz	5102.9 g
200 oz	5669.9 g
225 oz	6378.6 g
250 oz	7087.4 g
275 oz	7796.1 g
300 oz	8504.9 g
350 oz	9922.3 g
400 oz	11340 g
450 oz	12757 g
500 oz	14175 g
600 oz	17010 g
750 oz	21262 g
1000 oz	28350 g
2000 oz	56699 g
5000 oz	141748 g

Real-world reference

A slice of bread is about 1 oz. A baseball weighs around 5 oz. In grams, that gives you: 1 oz = 28.3495 g, 10 oz = 283.495 g, 100 oz = 2834.95 g.

Frequently asked questions

How many grams are in 1 ounce?: 1 ounce equals 28.3495 grams.
How do I convert ounces to grams?: Multiply the ounce value by 28.3495. So x oz × 28.3495 = the equivalent in g.
What is 5 ounces in grams?: 5 ounces equals 141.748 grams.
What is 10 ounces in grams?: 10 ounces equals 283.495 grams.
What is 100 ounces in grams?: 100 ounces equals 2834.95 grams.
How do I convert back from grams to ounces?: Multiply the gram value by 0.035274. For example, 1 g = 0.035274 oz.
Is the ounce bigger than the gram?: Yes. 1 ounce is larger than 1 gram — specifically 28.3495 times larger.
Are these conversion factors exact?: Yes. Since the 1959 international yard and pound agreement, imperial/US units are defined exactly in terms of metric units, so the factor used here (28.3495) is exact within IEEE 754 double precision.

About the ounce and the gram

The ounce

The avoirdupois ounce (oz) is a unit of mass in the imperial and US customary systems, defined as exactly 28.349523125 grams (1/16 of an avoirdupois pound). It is the standard small-mass unit in the United States for food packaging, recipes, and postal weights. Do not confuse it with the troy ounce (used for precious metals, 31.1035 g) or the fluid ounce (a volume).

The gram

The gram (g) is a metric unit of mass equal to one-thousandth of a kilogram. It is the everyday unit for food labeling, postage, jewelry, and laboratory measurements. The 2019 SI redefinition fixed the kilogram (and therefore the gram) in terms of Planck's constant, ending more than a century of dependence on a physical prototype.