18 Ounces to Grams
18 oz = 510.29 g
Formula
grams = ounces × 28.3495 18 × 28.3495 = 510.29 g
This is the avoirdupois (weight) ounce used for food and postage. A fluid ounce measures volume: 1 US fl oz of water weighs about 29.6 g. Precious metals use the troy ounce of 31.1 g.
Nearby values
Frequently asked questions
How many grams is 18 oz?
18 oz is 510.29 grams.
How many grams are in an ounce?
One ounce is 28.349523125 grams exactly; 28.35 g is close enough for cooking.