A bag of flour
- Input
- 500 g to ounces.
- Working
- 500 ÷ 28.349523125 = 17.6370.
- Result
- 500 g = 17.64 oz
Grams to Ounces
Convert grams to ounces with the exact 28.349523125 g factor, a full table and recipe and parcel examples, instantly in your browser. Runs entirely in your browser — your numbers never leave this device.
Grams → Ounces
17.636981 oz
500 g = 17.636981 oz
| Grams | Ounces |
|---|---|
| 10 g | 0.35274 oz |
| 20 g | 0.705479 oz |
| 30 g | 1.058219 oz |
| 40 g | 1.410958 oz |
| 50 g | 1.763698 oz |
| 60 g | 2.116438 oz |
| 70 g | 2.469177 oz |
| 80 g | 2.821917 oz |
| 90 g | 3.174657 oz |
| 100 g | 3.527396 oz |
| 110 g | 3.880136 oz |
| 120 g | 4.232875 oz |
| 130 g | 4.585615 oz |
| 140 g | 4.938355 oz |
| 150 g | 5.291094 oz |
| 160 g | 5.643834 oz |
| 170 g | 5.996574 oz |
| 180 g | 6.349313 oz |
| 190 g | 6.702053 oz |
| 200 g | 7.054792 oz |
| 210 g | 7.407532 oz |
| 220 g | 7.760272 oz |
| 230 g | 8.113011 oz |
| 240 g | 8.465751 oz |
| 250 g | 8.81849 oz |
| 260 g | 9.17123 oz |
| 270 g | 9.52397 oz |
| 280 g | 9.876709 oz |
| 290 g | 10.229449 oz |
| 300 g | 10.582189 oz |
| 310 g | 10.934928 oz |
| 320 g | 11.287668 oz |
| 330 g | 11.640407 oz |
| 340 g | 11.993147 oz |
| 350 g | 12.345887 oz |
| 360 g | 12.698626 oz |
| 370 g | 13.051366 oz |
| 380 g | 13.404106 oz |
| 390 g | 13.756845 oz |
| 400 g | 14.109585 oz |
| 410 g | 14.462324 oz |
| 420 g | 14.815064 oz |
| 430 g | 15.167804 oz |
| 440 g | 15.520543 oz |
| 450 g | 15.873283 oz |
| 460 g | 16.226022 oz |
| 470 g | 16.578762 oz |
| 480 g | 16.931502 oz |
| 490 g | 17.284241 oz |
| 500 g | 17.636981 oz |
How it works
Ounces = grams ÷ 28.349523125 (because 1 oz = 28.349523125 g exactly, from 1 lb = 0.45359237 kg and 16 oz = 1 lb)
| Grams | Ounces |
|---|---|
| 10 g | 0.35 oz |
| 25 g | 0.88 oz |
| 50 g | 1.76 oz |
| 100 g | 3.53 oz |
| 125 g | 4.41 oz |
| 200 g | 7.05 oz |
| 250 g | 8.82 oz |
| 400 g | 14.11 oz |
| 500 g | 17.64 oz |
| 1,000 g | 35.27 oz |
An ounce is defined through the pound: one pound is exactly 0.45359237 kg and one pound is exactly 16 ounces, so one ounce is 453.59237 ÷ 16 = 28.349523125 grams, exactly. Grams to ounces is therefore a single division: 500 g is 500 ÷ 28.349523125 = 17.6370 oz, and 100 g is 3.5274 oz. There is no approximation in the factor — only in how far you round the answer.
Recipes are where this conversion is met most. US recipes weigh butter, flour and chocolate in ounces while most of the world weighs in grams, and the sizes cluster awkwardly: a stick of butter is 4 oz = 113.40 g, a 250 g bag of flour is 8.82 oz, and a 400 g tin is 14.11 oz. The table runs through the pack sizes supermarkets actually sell, in both directions of common use.
Do not confuse the weight ounce with the fluid ounce: they share a name and nothing else. A fluid ounce is a volume (29.5735 mL US), so 100 g of flour is not 100 mL of anything. For ingredient volumes use the Cooking Converter; for parcel and luggage weights, batch mode on this page divides a whole pasted list by the same exact factor.
Worked examples
A stick of butter, backwards
- Input
- 4 oz to grams.
- Working
- 4 × 28.349523125 = 113.3981.
- Result
- 4 oz = 113.40 g
A spice quantity
- Input
- 100 g to ounces.
- Working
- 100 ÷ 28.349523125 = 3.5274.
- Result
- 100 g = 3.53 oz
Frequently asked questions
How many grams are in an ounce?
Exactly 28.349523125, because the pound is defined as 0.45359237 kg and there are 16 ounces to the pound: 453.59237 ÷ 16 = 28.349523125 g. So grams to ounces divides by that figure, and ounces to grams multiplies by it.
How many ounces are in 250 grams?
250 ÷ 28.349523125 = 8.8185 oz, which displays as 8.82 oz. The neighbouring pack sizes are just as uneven — 200 g is 7.05 oz and 400 g is 14.11 oz — which is why the table on this page lists the sizes shops actually use rather than round ounce steps.
Is an ounce the same as a fluid ounce?
No. The ounce on this page is weight: 1 oz = 28.35 g. A fluid ounce is volume: 1 US fl oz = 29.5735 mL. They coincide only for water at roughly room temperature, where 1 fl oz of water weighs about 1.04 oz — close enough to confuse, different enough to ruin a recipe. Ingredients by volume belong on the Cooking Converter.
Why do recipes say 1 cup of flour is 4.5 ounces?
Because that is a weight per cup for one ingredient, not a unit identity. A US cup of all-purpose flour weighs about 120 g, which is 120 ÷ 28.349523125 = 4.23 oz; the 4.5 oz figure assumes a heavier scoop. The conversion between grams and ounces never changes — what changes is how much flour is in the cup.
Can I convert a list of gram weights at once?
Yes. Batch mode divides every pasted line by 28.349523125, which suits a recipe being rescaled ingredient by ingredient, or a set of parcel weights quoted in grams that need ounce figures throughout.
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