Ounces to Grams Converter
One Ounce equals 28.34952313 Grams (1 oz = 28.34952313 g). Multiply an Ounce value by 28.34952313 to get the equivalent in Grams. Enter a value above to calculate the result. You can also use the formula and reference table below.
Formula
g = oz × 28.34952313
Multiply the Ounce value by 28.34952313 to get the equivalent value in Grams.
Example Conversions
1 Ounce (oz)
28.34952313 Gram (g)
5 Ounce (oz)
141.7476156 Gram (g)
10 Ounce (oz)
283.4952313 Gram (g)
25 Ounce (oz)
708.7380781 Gram (g)
100 Ounce (oz)
2834.952313 Gram (g)
Conversion Table
| Ounce (oz) | Gram (g) |
|---|---|
| 0.1 | 2.834952313 |
| 0.5 | 14.17476156 |
| 1 | 28.34952313 |
| 2 | 56.69904625 |
| 5 | 141.7476156 |
| 10 | 283.4952313 |
| 25 | 708.7380781 |
| 50 | 1417.476156 |
| 100 | 2834.952313 |
| 250 | 7087.380781 |
| 500 | 14174.76156 |
| 1000 | 28349.52312 |
How to Convert Manually
Use these steps to convert Ounce values to Gram without the calculator.
- Write down the value in Ounce (oz) that you want to convert.
- Multiply that value by 28.34952313.
- For example, 10 Ounces × 28.34952313 = 283.4952313 Grams.
- Label the result as Gram (g).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Ounce and one Gram.
About Ounce and Gram
The ounce is one sixteenth of a pound, exactly 28.349523125 grams. US recipes, portion sizes, and postal rates use it for quantities a pound would state too coarsely. The gram is one thousandth of a kilogram. Recipes, nutrition labels, and postal scales work in grams because the kilogram is too coarse for them. One Ounce equals 28.34952313 Grams (1 oz = 28.34952313 g). Ounce is used in US recipe ingredients and in food portion sizes. Gram is used in cooking and baking recipes.
Precision and Rounding:Metric-imperial mass factors are exact (1 lb = 0.45359237 kg by the 1959 agreement), so precision is purely a display choice. One decimal place is enough for body weight and cooking; nutrition labeling, pharmacy, and lab work need the full factor before rounding.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15Ounces equals425.2428469Grams.
15 oz × 28.34952313 = 425.2428469 g
FAQ
How do I convert Ounce to Gram?
Multiply the Ounce value by 28.34952313 to get the equivalent value in Grams.
What is the formula for Ounce to Gram?
The formula is g = oz × 28.34952313.
How many Grams are in 1 Ounce?
1 Ounce equals 28.34952313 Grams.
Can I convert Gram back to Ounce?
Yes. 1 Gram equals 0.03527396195 Ounces, and the related converter can reverse the calculation.
What are common names for Ounce and Gram?
Ounce is shown as oz and may also be searched as ounces. Gram is shown as g and may also be searched as grams, gramme, grammes.
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