Ounces to Grams Converter
Convert ounces to grams for cooking, baking, and shipping. Enter a weight in ounces and the tool returns grams, using the avoirdupois ounce of about 28.35 grams. It is the conversion you need when a recipe lists ounces but your kitchen scale reads in grams, or when a parcel's weight allowance is given in metric.
Calculate
Default result: 226.796 g
Ounces to Grams Converter · Result
calculators.dev
Grams
8 oz
Reviewed by the calculators.dev team · Last updated 2026-06-23
How to calculate
Type the number of ounces and read the grams below. To convert by hand, multiply ounces by 28.35 — 4 ounces of flour is about 113 grams. To go from grams back to ounces, divide by 28.35. The result updates as you type, which makes scaling a recipe up or down quick.
grams = ounces × 28.349523125, where 28.349523125 is the number of grams in one avoirdupois ounce (a sixteenth of the 453.59237 g pound). Equivalently, ounces = grams ÷ 28.349523125. A rounded 28.35 is accurate enough for kitchen use.
Example calculation
8 ounces multiplied by about 28.35 grams per ounce is roughly 226.796 grams — half a pound. The avoirdupois ounce is one sixteenth of a pound, which makes it 28.349523125 grams.
- result
- 226.796 g
Assumptions
- This uses the avoirdupois ounce — the everyday ounce for food and packages — which is exactly 28.349523125 grams.
- It is a weight ounce, not a fluid ounce. Fluid ounces measure volume and convert differently, so do not use this for liquids by volume.
- Displayed grams are rounded for readability; the underlying value keeps full precision.
Common mistakes
- Confusing the weight ounce with the fluid ounce — a fluid ounce of water weighs about 29.6 grams, and other liquids differ, so volume and weight are not interchangeable.
- Using the troy ounce (about 31.1 grams) used for precious metals instead of the avoirdupois ounce used for food.
- Rounding 28.35 down to 28, which understates grams noticeably on larger amounts.
Frequently asked questions
How many grams is 1 ounce?
One avoirdupois ounce is about 28.35 grams (28.349523125 g to be exact).
What is 8 ounces in grams?
8 ounces is about 226.8 grams, which is half a pound.
Is a fluid ounce the same as a weight ounce?
No. A fluid ounce measures volume and a weight ounce measures mass. This converter handles weight only.
Why are there different kinds of ounces?
The avoirdupois ounce is used for food and general goods, while the troy ounce is heavier and used for gold and silver. This tool uses the avoirdupois ounce.