Grams to Ounces Conversion Formula
To convert grams (g) to ounces (oz), divide the gram value by 28.349523125. For example, 100 g Γ· 28.349523125 β 3.5274 oz.
Ounces (oz) = Grams (g) Γ· 28.349523125
Alternatively, multiply grams by approximately 0.03527396195. One international avoirdupois ounce equals exactly 28.349523125 grams. This is the standard ounce used for food, product packaging, and everyday weight measurements.
Example: Convert 250 grams to ounces
1250 Γ· 28.349523125 β 8.81849 ozDivide
Result250 g β 8.82 oz
The final example is rounded to two decimal places for easier reading.
How to Convert Grams to Ounces
- Identify the weight in grams.
- Divide the gram value by 28.349523125.
- Express the result in ounces (oz).
Example: Convert 500 grams to ounces
1500 Γ· 28.349523125 β 17.63698 ozDivide
Result500 g β 17.64 oz
For a quick estimate, multiply grams by approximately 0.035274. The calculator uses the exact ounce definition and accepts decimal inputs.
Grams to Ounces Conversion Table
Common gram-to-ounce conversions, rounded to two decimal places. Values below 10 grams use four decimal places for additional precision.
| Grams (g) | Ounces (oz) |
|---|
| 1 g | 0.0353 oz |
| 2 g | 0.0705 oz |
| 5 g | 0.1764 oz |
| 10 g | 0.35 oz |
| 20 g | 0.71 oz |
| 25 g | 0.88 oz |
| 50 g | 1.76 oz |
| 75 g | 2.65 oz |
| 100 g | 3.53 oz |
| 125 g | 4.41 oz |
| 150 g | 5.29 oz |
| 200 g | 7.05 oz |
| 250 g | 8.82 oz |
| 300 g | 10.58 oz |
| 400 g | 14.11 oz |
| 500 g | 17.64 oz |
| 750 g | 26.46 oz |
| 1,000 g | 35.27 oz |
| 2,000 g | 70.55 oz |
| 5,000 g | 176.37 oz |
Understanding Grams and Ounces
What Is a Gram (g)?
A gram is a metric unit of mass equal to one-thousandth of a kilogram.
1 gram = 0.001 kilograms
Grams are used for food ingredients, small products, and laboratory materials. The metric system uses decimal relationships between units.
What Is an Ounce (oz)?
An ounce is a unit of mass used in the United States and other customary or imperial measurement contexts.
1 avoirdupois ounce = exactly 28.349523125 grams
Ounces are common for food portions, product packaging, and cooking ingredients. Both units measure mass; an avoirdupois ounce is approximately 28.35 times as large as a gram.
Ounce vs. Troy Ounce vs. Fluid Ounce
Avoirdupois Ounce (oz)
The standard mass unit for food and packaged products equals exactly 28.349523125 g.
Troy Ounce (oz t)
Used for precious metals such as gold and silver, a troy ounce equals exactly 31.1034768 g. It is heavier than an avoirdupois ounce.
Fluid Ounce (fl oz)
A fluid ounce measures volume. Converting fluid ounces to grams requires the substanceβs density. US and imperial fluid ounces also represent different volumes.
This calculator converts grams to avoirdupois ounces.
Quick Mental Math Trick
Divide grams by approximately 28.35 for a quick estimate:
- 28.35 g β 1 oz
- 50 g β 1.76 oz
- 100 g β 3.53 oz
- 250 g β 8.82 oz
- 500 g β 17.64 oz
Dividing by 28 gives a rougher estimate. Use the calculator above for precise conversions.
Common Uses of Grams to Ounces Conversion
- Cooking and baking: 200 g of flour is approximately 7.05 oz by mass.
- Food packaging: a 100 g package contains approximately 3.53 oz.
- Shipping small parcels: a 500 g package has a mass of approximately 17.64 oz.
Frequently Asked Questions
How many ounces are in 1 gram?
One gram equals approximately 0.03527396195 avoirdupois ounces.
How do I convert grams to ounces?
Divide the weight in grams by 28.349523125. For example, 100 g is approximately 3.53 oz.
How many ounces are in 100 grams?
100 grams equals approximately 3.5274 ounces, or 3.53 oz when rounded to two decimal places.
How many ounces are in 250 grams?
250 grams equals approximately 8.82 ounces.
Is 28 grams equal to 1 ounce?
Not exactly. One avoirdupois ounce equals 28.349523125 grams, so 28 grams is approximately 0.9877 ounces.
Are ounces and fluid ounces the same?
No. Ounces measure mass, while fluid ounces measure volume. They cannot be converted directly without information such as density.
Is a troy ounce the same as a regular ounce?
No. A troy ounce equals 31.1034768 grams, while a standard avoirdupois ounce equals 28.349523125 grams.
How do I convert ounces back to grams?
Multiply the ounce value by 28.349523125. For example, 5 oz Γ 28.349523125 = 141.747615625 g.
Related Weight Conversions
Explore more weight and mass conversion tools:
Conversion reference: National Institute of Standards and Technology (NIST), Handbook 133, Appendix E, General Tables of Units of Measurement.