Convert Grams to Ounces
Grams to ounces is the conversion for reading a metric weight in the imperial unit that shows up on so many food labels and recipes. One ounce is exactly 28.349523125 grams — one-sixteenth of a pound — so to go from grams to ounces you divide by that figure (or multiply by about 0.0352740).
Grams to Ounces conversion table
| Grams (g) | Ounces (oz) |
|---|---|
| 1 | 0.035274 |
| 2 | 0.070548 |
| 3 | 0.105822 |
| 5 | 0.17637 |
| 10 | 0.35274 |
| 20 | 0.705479 |
| 50 | 1.763698 |
| 100 | 3.527396 |
| 500 | 17.636981 |
| 1,000 | 35.273962 |
The formula
To convert grams to ounces, divide the weight in grams by 28.349523125 (or multiply by about 0.0352740):
ounces = grams ÷ 28.349523125
A worked example
A block of cheese weighs 250 grams and the recipe lists cheese in ounces:
250 × 0.0352740 = 8.82 oz
So 250 g is just under nine ounces — a shade over half a pound.
Why the number runs so long
The ounce is tied to the pound, and the pound is tied to the gram by an exact definition, so the ounce inherits an exact but ungainly value: 28.349523125 grams. It looks awkward, but that precision is deliberate — it keeps sixteen ounces adding up to exactly one pound with no drift.
When you'll use it
Converting a metric-labelled food weight into ounces for an older recipe, portioning ingredients when your scale reads grams, comparing packaged goods that mix the two units, or checking a serving size quoted in grams against an ounce-based guideline.
Frequently asked questions
How many grams are in an ounce?
Exactly 28.349523125 grams. That's the avoirdupois ounce, defined as one-sixteenth of the international pound, which makes the value exact rather than rounded.
What's a rough mental estimate for grams to ounces?
Think of an ounce as a bit over 28 grams. So 100 g is about three and a half ounces, and 200 g is roughly seven. Use the exact factor when it needs to be right.
Is this the same ounce used for gold and silver?
No. Food and everyday weights use the avoirdupois ounce shown here. Precious metals use the troy ounce, which is heavier — a common mix-up worth avoiding.