Ounces to Grams (oz to g) Converter
A fast, bidirectional converter for **mass (weight)**. Enter a value in either field to convert between ounces (oz) and grams (g).
Weight/Mass Conversion (oz ↔ g)
Bonus: Volume Converter (fl oz ↔ ml)
Confused? You might be looking for **fluid ounces (volume)**, not ounces (weight). Use this tool to convert liquid measurements.
Ounces vs. Fluid Ounces: A Critical Difference
The word "ounce" is one of the most confusing units. It's crucial to know if you are measuring **weight (mass)** or **volume**. They are not the same!
- Ounce (oz): This is a unit of **WEIGHT/MASS**. It is used for dry ingredients like flour, sugar, or nuts. The formula is
1 oz = 28.34952 grams. - Fluid Ounce (fl oz): This is a unit of **VOLUME**. It is used for liquids like water, milk, or oil. The formula is
1 US fl oz = 29.57353 milliliters.
A "cup of flour" and a "cup of water" have the same **volume** (8 fl oz) but very different **weights** (mass). Our first calculator is for weight (oz to g), and the second is for volume (fl oz to ml).
Conversion Formulas
Volume: 1 US Fluid Ounce (fl oz) = 29.57353 Milliliters (ml)
Ounces to Grams Quick Conversion Chart (Mass)
| Ounces (oz) | Grams (g) - approx. |
|---|---|
| 0.25 oz (1/4 oz) | 7.09 g |
| 0.5 oz (1/2 oz) | 14.17 g |
| 1 oz | 28.35 g |
| 4 oz | 113.4 g |
| 8 oz (1/2 lb) | 226.8 g |
| 16 oz (1 lb) | 453.59 g |
Frequently Asked Questions (FAQ)
How many grams are in 1 ounce?
There are **28.34952 grams** in 1 standard (avoirdupois) ounce. For cooking, this is often rounded to 28.35 g.
How many grams are in 8 oz?
You multiply 8 by 28.34952, which equals **226.796 grams**.
Is a fluid ounce (fl oz) the same as an ounce (oz)?
No. An ounce (oz) measures weight/mass, while a fluid ounce (fl oz) measures volume. 1 cup of water has a volume of 8 fl oz and a weight of about 8.3 oz. 1 cup of flour has the same 8 fl oz volume but only weighs about 4.25 oz.