One ounce
Input: 1 oz
Output: 28.3495 g
1 × 28.349523125 = 28.3495 grams.
ounces to grams converter
Use this to turn ounce weights from recipes or labels into grams.
Grams:
Formula and algorithm
- grams = ounces × 28.349523125
- Constant used: 1 ounce (avoirdupois) = 28.349523125 grams (exact).
- Multiply the ounce value by 28.349523125 to get grams.
Worked examples
Half pound
Input: 8 oz
Output: 226.7962 g
8 × 28.349523125 = 226.7962 grams.
One pound
Input: 16 oz
Output: 453.5924 g
16 × 28.349523125 = 453.5924 grams (≈ 1 pound).
FAQ
What is 1 oz in grams?
About 28.35 grams (28.349523125 g exactly) for the avoirdupois ounce.
Why is 16 oz about 453.59 g?
16 avoirdupois ounces make one pound, which is 453.59237 grams.
Does this work for fluid ounces?
No — fluid ounces measure volume. Use the mL to fluid ounces tool for liquids.
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Updated: June 7, 2026