Ounces to Grams Formula

The exact conversion factor for oz to g, plus when to use weight vs. fluid ounces.

grams = ounces × 28.3495

1 avoirdupois ounce = exactly 28.349523125 grams

Quick converter: Ounces to Grams Converter →

Ounces to Grams Chart

OuncesGramsPounds
1 oz 28.3 g 0.06 lb
2 oz 56.7 g 0.13 lb
3 oz 85.0 g 0.19 lb
4 oz 113.4 g 0.25 lb
5 oz 141.7 g 0.31 lb
6 oz 170.1 g 0.38 lb
7 oz 198.4 g 0.44 lb
8 oz 226.8 g 0.50 lb
10 oz 283.5 g 0.63 lb
12 oz 340.2 g 0.75 lb
14 oz 396.9 g 0.88 lb
16 oz 453.6 g 1.00 lb
20 oz 567.0 g 1.25 lb
24 oz 680.4 g 1.50 lb
32 oz 907.2 g 2.00 lb

Weight Ounces vs. Fluid Ounces

This is one of the most common sources of confusion in cooking:

For water (density ≈ 1 g/mL), they're close: 1 fl oz of water weighs about 1.04 oz. But for other ingredients, they can be very different.

Key Reference Points

1 pound (lb) = 16 ounces = 453.592 grams
1 kilogram = 35.274 ounces = 2.205 pounds
All converters: Oz to Grams · Cups to Grams · Tbsp to mL · Temperature