grams to oz formula
To convert grams to ounces, multiply the number of grams by 0.0352739619496. In symbols: oz = g × 0.0352739619496.
One gram equals 0.0352739619496 ounces, and one ounce equals 28.349523125 grams. Because one ounce is exactly 28.349523125 g, a gram is exactly 0.0352739619 oz and the page applies that ratio.
Worked example
Suppose you have 250 grams and need the answer in ounces.
- Write the formula: oz = g × 0.0352739619496.
- Put in the number: 250 × 0.0352739619496 = 8.818490487.
- Round to suit the job. 8.818 oz is accurate enough for most everyday uses.
So 250 g is 8.818490487 oz. To check, convert back: 8.818490487 oz is 250 g.
Common grams to ounces values
| grams (g) | ounces (oz) |
|---|---|
| 1 | 0.03527396195 |
| 2 | 0.0705479239 |
| 5 | 0.1763698097 |
| 10 | 0.3527396195 |
| 20 | 0.705479239 |
| 50 | 1.763698097 |
| 100 | 3.527396195 |
Reference points
Some familiar amounts in grams, converted to ounces:
- 28.35 g, about one ounce: 1.00002 oz
- 100 g, a small chocolate bar: 3.5274 oz
- 250 g, a block of butter outside the US: 8.81849 oz
- 1,000 g, one kilogram: 35.274 oz
Where you will use it
Nutrition panels, spice jars, coffee beans and postage are weighed in grams, while US recipes and shipping scales want ounces. Parcel prices often jump at ounce thresholds.
Quick mental math
Divide by 28 for a quick estimate. 250 / 28 gives 8.93 against the exact 8.82 oz. Rule of thumb: multiply by 0.035. For 250 g this gives 8.75 oz against the exact 8.818, an error of 0.78 percent.
Going the other way
Need the reverse? Use the oz to grams converter. For comparison, 1 oz is 28.349523 g. To compare every weight unit at once, open the weight converter.
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