Ounces to Grams Converter
Converting ounces to grams — for recipes, coffee, or postage? Enter a value for an instant result. Defaults to oz → g.
Ounces to grams
All units in this category
How to convert ounces to grams
One ounce equals 28.3495 grams. To convert ounces to grams, multiply by 28.3495. For example, 8 oz × 28.3495 = 226.796 grams — the weight of a US cup of water.
Quick conversion table
Common ounce-to-gram conversions for quick reference:
1 oz
28.3495 g
2 oz
56.699 g
4 oz
113.398 g
8 oz
226.796 g
12 oz
340.194 g
16 oz
453.592 g
32 oz
907.185 g
64 oz
1814.37 g
100 oz
2834.95 g
160 oz
4535.92 g
Need the reverse? Try our grams to ounces converter, or browse every unit in the main unit converter.
Frequently asked questions
How many grams are in an ounce?
28.3495 grams per (avoirdupois) ounce.
How do you convert oz to grams?
Multiply ounces by 28.3495. Example: 4 oz × 28.3495 = 113.398 g.
How many grams is 8 oz?
8 oz = 226.796 g.
How many grams is 16 oz?
16 oz = 453.592 g — exactly one pound.
Is a fluid ounce the same as an ounce?
No. A fluid ounce measures volume (≈29.57 mL); an ounce measures weight (28.3495 g). They only match for water-like liquids.