Mass conversion
Ounces to Grams (oz to g)
1 oz = 28.3495 g — multiply the number of ounces by 28.3495.
Ounces to Grams conversion chart
| ounces | grams |
|---|---|
| 1 oz | 28.3495 g |
| 2 oz | 56.699 g |
| 3 oz | 85.0486 g |
| 4 oz | 113.398 g |
| 5 oz | 141.748 g |
| 6 oz | 170.097 g |
| 7 oz | 198.447 g |
| 8 oz | 226.796 g |
| 9 oz | 255.146 g |
| 10 oz | 283.495 g |
| 12 oz | 340.194 g |
| 15 oz | 425.243 g |
| 18 oz | 510.291 g |
| 20 oz | 566.99 g |
| 25 oz | 708.738 g |
| 30 oz | 850.486 g |
| 40 oz | 1133.98 g |
| 50 oz | 1417.48 g |
| 60 oz | 1700.97 g |
| 75 oz | 2126.21 g |
| 100 oz | 2834.95 g |
How to convert by hand
1 oz = 28.3495231 g
Because this is a linear conversion, the ratio never changes: every ounce is always 28.3495 g, whatever the size of the number.
Worked example: 10 oz × 28.3495 = 283.495 g .
Related conversions
About ounces and grams
Weight conversions matter most for travel, shipping and fitness, where the same object is quoted in kilograms in one country and pounds in another.
Ounce
US / ImperialOne sixteenth of a pound, or exactly 28.349523125 grams.
Commonly used for: Food packaging and postal weights in the US.
Gram
Metric (SI)One thousandth of a kilogram.
Commonly used for: Recipe quantities, nutrition labels and postage.
Questions
How many grams are in one ounce?
One ounce equals 28.3495 g. To convert any amount, multiply the number of ounces by 28.3495.
What is 5 oz in g?
5 oz = 141.748 g. Type any value into the converter above to get an exact answer.
How do I convert grams back to ounces?
Divide by 28.3495 instead of multiplying — or use our Grams to Ounces converter.
Is this converter accurate?
Yes. Linear conversions use the internationally agreed factors published by NIST (SP 811), and temperature conversions use the exact defining formulas. Calculations run at full double precision and are only rounded for display.
Need a different unit?
The full converter handles length, mass, volume, area, speed and temperature — with every metric and US/UK unit in one place.
Open the unit converter