1 Ounce to Gram
1 Ounce (oz) equals
28.349523 g
1 × 28.349523125 = 28.349523 Gram
Convert Ounce (oz) to Gram (g) instantly. 1 oz = 28.349523 g.
Mass Converter
26 units available
1 oz = 28.349523 g
Formula:
g = oz × 28.349523125With your value: 1 oz = 28.34952313 g
How big is that?
Everyday references on a logarithmic scale, all expressed in ounce so you can sanity-check the result.
Other Ounce to Gram conversions
Ounce to Gram Conversion Table
| Ounce (oz) | Gram (g) |
|---|---|
| 0.5 | 14.174762 |
| 1 | 28.349523 |
| 2 | 56.699046 |
| 5 | 141.747616 |
| 10 | 283.495231 |
| 15 | 425.242847 |
| 20 | 566.990463 |
| 25 | 708.738078 |
| 50 | 1,417.476156 |
| 100 | 2,834.952313 |
| 250 | 7,087.380781 |
| 500 | 14,174.761563 |
| 1000 | 28,349.523125 |
Gram to Ounce Conversion Table
| Gram (g) | Ounce (oz) |
|---|---|
| 0.5 | 0.017637 |
| 1 | 0.035274 |
| 2 | 0.070548 |
| 5 | 0.17637 |
| 10 | 0.35274 |
| 15 | 0.529109 |
| 20 | 0.705479 |
| 25 | 0.881849 |
| 50 | 1.763698 |
| 100 | 3.527396 |
| 250 | 8.81849 |
| 500 | 17.636981 |
| 1000 | 35.273962 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Ounce (oz)
Mass
1 avoirdupois ounce = 1/16 lb = 0.028 349 523 125 kg exactly.
Source: International Yard and Pound Agreement of 1959; NIST Federal Register Notice 59-5442
US, UK, Canada, Australia, New Zealand, South Africa · Reviewed 2026-07-01
Gram (g)
Mass
Traceable to the kilogram, defined by fixing the Planck constant at 6.626 070 15 × 10⁻³⁴ J·s. Avoirdupois masses derive from the 1959 international pound (0.453 592 37 kg exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Ounce to Gram
To convert from Ounce (oz) to Gram (g), multiply the value by 28.349523125.
Formula: g = oz × 28.349523125
Reverse: oz = g × 0.0352739619
Step-by-Step Example
- Start with your value in Ounce. For example: 5 oz
- Multiply by the conversion factor: 5 x 28.349523125
- The result is: 141.747616 g
About Ounce
The ounce (oz) equals 1/16 of a pound or approximately 28.35 grams. It is used for food portions and small weight measurements.
Common uses: food portions, postal mail, precious metals.
About Gram
The gram equals one thousandth of a kilogram. It is commonly used for measuring food, ingredients, and small items.
Common uses: cooking, nutrition labels, jewelry.
Frequently Asked Questions
What is 1 Ounce in Gram?
1 Ounce equals 28.349523 Gram.
How many Gram are in 1 Ounce?
There are exactly 28.349523125 Gram in 1 Ounce. This means the conversion factor from Ounce to Gram is 28.349523125.
What is the formula to convert Ounce to Gram?
The formula to convert Ounce to Gram is: g = oz × 28.349523125. For example, to convert 10 Ounce to Gram, you would multiply 10 by 28.349523125.
What is a Ounce?
The ounce (oz) equals 1/16 of a pound or approximately 28.35 grams. It is used for food portions and small weight measurements.
What is a Gram?
The gram equals one thousandth of a kilogram. It is commonly used for measuring food, ingredients, and small items.
What are the common uses of Ounce?
The Ounce is commonly used in food portions, postal mail, precious metals.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). 1 Ounce to Gram. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/1-ounce-to-gram