Ounces to Grams Converter

How to convert ounces to grams

grams = ounces × 28.349523125

1 ounce is 1/16 pound, exactly 28.349523125 grams. 1 gram is one thousandth of a kilogram.

The factor 28.349523125 is exact, not a rounded value. Nothing is rounded until you choose how many decimals to show.

Worked example: 8 oz

1. Start with the value in ounces: 8 oz.
2. Multiply by 28.349523125, because 1 ounce = 28.349523125 grams: 8 × 28.349523125 = 226.796185 g.
3. Round to the precision you need: 226.80 g to two decimals.

Ounces and grams side by side

Ounces to grams chart

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Ounces from 1 to 100 converted to grams with the exact factor, shown to five significant digits.

Ounces to grams, part 1 of 4

oz	g
1	28.35
2	56.699
3	85.049
4	113.4
5	141.75
6	170.1
7	198.45
8	226.8
9	255.15
10	283.5
11	311.84
12	340.19
13	368.54
14	396.89
15	425.24
16	453.59
17	481.94
18	510.29
19	538.64
20	566.99
21	595.34
22	623.69
23	652.04
24	680.39
25	708.74

Ounces to grams, part 2 of 4

oz	g
26	737.09
27	765.44
28	793.79
29	822.14
30	850.49
31	878.84
32	907.18
33	935.53
34	963.88
35	992.23
36	1,020.6
37	1,048.9
38	1,077.3
39	1,105.6
40	1,134
41	1,162.3
42	1,190.7
43	1,219
44	1,247.4
45	1,275.7
46	1,304.1
47	1,332.4
48	1,360.8
49	1,389.1
50	1,417.5

Ounces to grams, part 3 of 4

oz	g
51	1,445.8
52	1,474.2
53	1,502.5
54	1,530.9
55	1,559.2
56	1,587.6
57	1,615.9
58	1,644.3
59	1,672.6
60	1,701
61	1,729.3
62	1,757.7
63	1,786
64	1,814.4
65	1,842.7
66	1,871.1
67	1,899.4
68	1,927.8
69	1,956.1
70	1,984.5
71	2,012.8
72	2,041.2
73	2,069.5
74	2,097.9
75	2,126.2

Ounces to grams, part 4 of 4

oz	g
76	2,154.6
77	2,182.9
78	2,211.3
79	2,239.6
80	2,268
81	2,296.3
82	2,324.7
83	2,353
84	2,381.4
85	2,409.7
86	2,438.1
87	2,466.4
88	2,494.8
89	2,523.1
90	2,551.5
91	2,579.8
92	2,608.2
93	2,636.5
94	2,664.9
95	2,693.2
96	2,721.6
97	2,749.9
98	2,778.3
99	2,806.6
100	2,835

grams = ounces × 28.349523125. Factors: NIST SP 811, NIST Handbook 44, BIPM SI Brochure. unitcheck.net/weight/ounces-to-grams/

Common values

Weight ounces, not fluid ounces

This page converts the avoirdupois ounce, a unit of weight (1/16 pound). A fluid ounce is a unit of volume (29.57 mL in the US) and only weighs about an ounce when the liquid is as dense as water. For liquids by volume see fluid ounces to cups. Precious metals use the troy ounce, which is heavier and is not covered here.

Going the other way? Use the Grams to Ounces converter.