Convert grams to ounces (g to oz)
To convert grams to ounces, divide the value in grams by 28.349523125 — the same as multiplying by about 0.035274. It turns metric recipe amounts, food labels, postage weights and coffee doses into US ounces. This grams to ounces converter works both ways: type grams or ounces into either box above and the other box, the worked formula and the chart below update as you type.
The gram (g) is one thousandth of a kilogram. When the metric system was created in the 1790s it was defined as the mass of one cubic centimeter of water. Grams are used for food labels and recipes, nutrition facts, postage, jewelry and medicine doses around the world. One gram is 0.035274 ounces.
The ounce (oz) used for food is the avoirdupois ounce: 1/16 of a pound, or exactly 28.349523125 grams. Going the other way, one ounce equals 28.3495 grams. Ounces are used in the US for food packaging, portion sizes, postage and baby weights. They are not the same as fluid ounces, which measure volume, or the troy ounces used for gold.
How to convert grams to ounces with this tool
- Type a number into the Grams (g) box — it starts at 100 g as an example.
- Read the answer in the Ounces (oz) box and in the result panel, which also shows the formula with your number.
- To go the other way, type into the ounces box, or press the swap button to open the Ounces to Grams converter with your value carried over.
- Choose how many decimal places you want, or tap a quick value such as 10 g, 100 g, 250 g.
- Press Copy result to paste the conversion into a message, spreadsheet or note.
Grams to Ounces converter features
Converts both ways
Type in the grams box to get ounces, or in the ounces box to get grams. The other box follows instantly.
Exact factor
Calculations use 1 oz = 28.349523125 g, and rounding is applied only to the answer you see — choose Auto or 0–10 decimal places.
Formula with your number
The working is shown under the result, for example 100 g ÷ 28.349523125 = 3.5274 oz, so you can check it or copy the method.
Quick values and chart
Tap common values like 10 g, 100 g, 250 g, or read the grams-to-ounces table further down this page.
Grams to Ounces formula
The formula is oz = g ÷ 28.349523125. It is exact because an avoirdupois ounce is 1/16 of a pound, which makes it exactly 28.349523125 grams.
The reverse formula is g = oz × 28.349523125 — or use the Ounces to Grams converter. Three worked examples:
- 100 g of pasta: 100 g ÷ 28.349523125 = 3.5274 oz
- A 250 g block of butter: 250 g ÷ 28.349523125 = 8.8185 oz
- An 18 g espresso dose: 18 g ÷ 28.349523125 = 0.6349 oz
Grams to Ounces quick reference
The values people look up most often, worked out with the exact factor:
- 1 g = 0.035274 oz
- 1 oz = 28.3495 g
- 10 g = 0.3527 oz
- 100 g = 3.5274 oz
- 250 g = 8.8185 oz
- 500 g = 17.637 oz
Quick tip: Divide by 28 for a fast estimate (slightly high): 280 g ÷ 28 = 10 oz, while the exact figure is 9.8767 oz.
Related conversions: Grams to Pounds, Pounds to Grams and the full weight converter.
Grams to Ounces conversion table
Values in ounces are rounded to 4 decimal places (more for very small numbers). For any value not listed, type it into the converter above.
| g | oz | g | oz |
|---|---|---|---|
| 5 | 0.1764 | 175 | 6.1729 |
| 10 | 0.3527 | 200 | 7.0548 |
| 15 | 0.5291 | 225 | 7.9366 |
| 20 | 0.7055 | 250 | 8.8185 |
| 25 | 0.8818 | 300 | 10.5822 |
| 30 | 1.0582 | 350 | 12.3459 |
| 40 | 1.411 | 400 | 14.1096 |
| 50 | 1.7637 | 450 | 15.8733 |
| 60 | 2.1164 | 500 | 17.637 |
| 70 | 2.4692 | 600 | 21.1644 |
| 75 | 2.6455 | 700 | 24.6918 |
| 80 | 2.8219 | 750 | 26.4555 |
| 90 | 3.1747 | 800 | 28.2192 |
| 100 | 3.5274 | 900 | 31.7466 |
| 125 | 4.4092 | 1,000 | 35.274 |
| 150 | 5.2911 |
Grams to Ounces FAQ
How many ounces is 50 g?
50 grams is 1.7637 ounces: 50 g ÷ 28.349523125 = 1.7637 oz.
How do I convert grams to ounces?
Divide the value in grams by 28.349523125 — the same as multiplying by about 0.035274. For example, 500 g ÷ 28.349523125 = 17.637 oz. To convert back, multiply the value in ounces by 28.349523125 — or use the Ounces to Grams converter.
How many grams are in one ounce?
One ounce is 28.3495 grams, because 1 oz × 28.349523125 = 28.3495 g.
What is 500 grams in ounces?
Is this the same as a troy ounce for gold?
No. This converter uses the everyday avoirdupois ounce (28.349523125 g). Gold and silver are weighed in troy ounces of 31.1034768 g, so 100 g of gold is about 3.215 troy oz, whereas 100 g = 3.5274 oz.