Ounces to grams (oz to g) for US recipes and parcels

Convert ounces to grams (× 28.349523125 exactly), with a table from ¼ oz to 2 lb.

Fromounce (avoirdupois) (oz)

Togram (g)

28.3

Decimals1 decimal

Formula: g = oz × 28.349523125

1 oz = 28.3 g

Common values: ounce (avoirdupois) to gram

oz	g
0.25 oz	7.1 g
0.5 oz	14.2 g
1 oz	28.3 g
2 oz	56.7 g
3 oz	85 g
4 oz	113.4 g
5 oz	141.7 g
6 oz	170.1 g
8 oz	226.8 g
10 oz	283.5 g
12 oz	340.2 g
16 oz	453.6 g
20 oz	567 g
32 oz	907.2 g

Quick answers

1 oz to g: 28.35 g
4 oz to g: 113.4 g
8 oz to g: 226.8 g
12 oz to g: 340.19 g
16 oz to g: 453.59 g
1 lb to oz: 16 oz

How it works

Grams = ounces × 28.349523125, exactly, because the pound is 0.45359237 kg and an ounce is 1/16 of it. A US stick of butter (4 oz) is 113.4 g, 8 oz is 226.8 g and 16 oz (1 lb) is 453.59 g.

US recipes and nutrition labels give weights in ounces; kitchen scales outside the US read grams. For cups and spoons, which measure volume, use the cups-to-grams converter instead. Fluid ounces (fl oz) are also volume and need a density to become grams.

How to convert ounces to grams

Formula: g = oz × 28.349523125.

Multiply the ounces by 28.349523125. Worked example for an 8 oz steak: 8 × 28.349523125 = 226.8 g.

For pounds and ounces, turn everything into ounces first (1 lb = 16 oz): 1 lb 4 oz = 20 oz = 567 g. If a recipe gives fluid ounces (fl oz), that is a volume; use the volume or cups-to-grams converter instead.

Grams to ounces: the reverse direction, oz = g × 0.0352739619496

oz to g chart

Each row is computed with the same exact factor as the converter above and rounded only for display.

Ounces	Grams	Kilograms
0.25 oz	7.1 g	0.007 kg
0.5 oz	14.2 g	0.014 kg
1 oz	28.3 g	0.028 kg
1.5 oz	42.5 g	0.043 kg
2 oz	56.7 g	0.057 kg
3 oz	85 g	0.085 kg
4 oz	113.4 g	0.113 kg
5 oz	141.7 g	0.142 kg
6 oz	170.1 g	0.17 kg
7 oz	198.4 g	0.198 kg
8 oz	226.8 g	0.227 kg
10 oz	283.5 g	0.283 kg
12 oz	340.2 g	0.34 kg
14 oz	396.9 g	0.397 kg
16 oz	453.6 g	0.454 kg
20 oz	567 g	0.567 kg
24 oz	680.4 g	0.68 kg
28 oz	793.8 g	0.794 kg
32 oz	907.2 g	0.907 kg
48 oz	1,360.8 g	1.361 kg
64 oz	1,814.4 g	1.814 kg

Everyday ounces-to-grams examples

One US stick of butter: 4 oz = 113.4 g.
One pound (16 oz) of meat or cheese: 16 oz = 453.59 g.
One ounce of cheese, a common US serving size: 1 oz = 28.35 g.
A 6 oz yoghurt pot: 6 oz = 170.1 g.
The US Postal Service's 13 oz First-Class limit for large envelopes: 13 oz = 368.54 g.

How to use it

Type the value in the first box; the converted value appears in the second box as you type.
Or type in the second box to convert the other way.
Use the Decimals menu to round, and the quick-reference table for common values.

Frequently asked questions

How many grams are in 1 oz?

28.349523125 g exactly, about 28.35 g.

How many grams is 8 oz?

226.8 g, half a pound.

Is 1 oz 30 g?

Only approximately. Some nutrition labels round 1 oz to 28 g or 30 g; the exact value is 28.35 g.

How do I convert pounds and ounces to grams?

Multiply the pounds by 16, add the ounces, then multiply by 28.3495: 2 lb 4 oz = 36 oz = 1020.6 g.

How many ounces are in a pound (lbs to oz)?

Exactly 16: 1 lb = 16 oz, so multiply pounds by 16 (2.5 lb = 40 oz).