Use our Ounces to Grams converter to quickly and accurately convert weight from ounces (oz) to grams (g). Enter a value in ounces in the calculator above to instantly find the equivalent weight in grams.
Convert Ounces to Grams
Enter a weight in ounces to instantly calculate the equivalent weight in grams.
Formula: grams = ounces × 28.349523125
How to Convert Ounces to Grams
To convert ounces to grams, multiply the number of ounces by 28.349523125.
1 ounce = 28.349523125 grams
Formula
grams = ounces × 28.349523125
Example: Convert 8 ounces to grams.
8 × 28.349523125 = 226.796185
8 oz = 226.796185 g
Ounces to Grams Conversion Chart
| Ounces | Grams |
|---|---|
| 0.5 | 14.174762 |
| 1 | 28.349523 |
| 2 | 56.699046 |
| 4 | 113.398093 |
| 8 | 226.796185 |
| 12 | 340.194278 |
| 16 | 453.592370 |
| 24 | 680.388555 |
| 32 | 907.184740 |
| 64 | 1814.369480 |
Common Ounces to Grams Conversions
Some common weight conversions include 1 oz = 28.35 g, 2 oz = 56.70 g, 4 oz = 113.40 g, 8 oz = 226.80 g, and 16 oz = 453.59 g.
These conversions are useful for food packaging, recipes, shipping weights, product specifications, and other situations where U.S. customary and metric measurements need to be compared.
For weight values not listed above, use the Ounces to Grams converter to calculate the equivalent measurement in grams instantly.
Ounces and Grams in Weight Measurement
Ounces and grams are both used to measure weight or mass, but they belong to different measurement systems. Ounces are commonly used in the United States, while grams are part of the metric system and are widely used internationally.
For this converter, ounce means the avoirdupois ounce, which is the standard ounce used for ordinary weight measurements. It should not be confused with a fluid ounce, which measures volume rather than weight.
Frequently Asked Questions
How do you convert ounces to grams?
Multiply the number of ounces by 28.349523125.
How many grams are in 1 ounce?
1 ounce equals exactly 28.349523125 grams.
How many grams are in 4 ounces?
4 ounces equal approximately 113.398093 grams.
How many grams are in 8 ounces?
8 ounces equal approximately 226.796185 grams.
How many grams are in 16 ounces?
16 ounces equal 453.59237 grams.
Are ounces and fluid ounces the same thing?
No. Ounces measure weight or mass, while fluid ounces measure volume.
When You Might Need to Convert Ounces to Grams
You may need to convert ounces to grams when following international recipes, comparing food labels, weighing small packages, checking product specifications, calculating shipping weights, or working with measurements from different countries.
The Ounces to Grams converter makes it easy to compare U.S. customary weight measurements with metric measurements used around the world.

About Ounces
The ounce (oz) used for ordinary weight measurement is part of the U.S. customary and British imperial systems. One avoirdupois ounce equals exactly 28.349523125 grams, and 16 ounces equal one avoirdupois pound.
About Grams
The gram (g) is a metric unit of mass. One gram equals 0.001 kilogram, or one-thousandth of a kilogram. Grams are commonly used for food, ingredients, small products, scientific measurements, and other relatively light objects.
For additional information about metric measurement and SI units, visit the U.S. National Institute of Standards and Technology (NIST).
Understanding the difference between these measurement systems is especially useful when comparing weights, products, recipes, or specifications from different countries. Ounces are commonly used for weight measurements in the United States, while grams are standard throughout much of the world as part of the metric system. Whether you are weighing food, following a recipe, calculating shipping weight, checking product information, or comparing international measurements, an accurate ounces to grams conversion helps ensure that you are working with the correct weight measurement.
For fast and accurate results, use our Ounces to Grams converter whenever you need to compare weight measurements between ounces (oz) and grams (g).
Convert Inches to Centimeters
Need to convert in the opposite direction? Use our Grams to Ounces Converter to quickly convert grams (g) into ounces (oz).
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