Grams to fl oz Converter

What Is the Grams to fl oz Converter?

The Grams to fl oz Converter converts between grams and fluid ounces using ingredient density. Grams measure mass while fluid ounces measure volume, so the result depends on what you are measuring. Recipes often list butter in grams but measuring cups in fluid ounces, and this tool bridges that gap instantly.

Choose from 17 kitchen ingredients with preset densities, switch between US and UK fluid ounces, and convert in either direction. Results include milliliters, cups, and tablespoons for quick reference.

How to Use This Converter

1. Select direction: Convert grams to fluid ounces or fluid ounces to grams.
2. Choose fluid ounce type: US customary (29.574 ml) or UK imperial (28.413 ml).
3. Pick an ingredient: Water, milk, flour, honey, and more.
4. Enter the value: Type grams or fluid ounces.
5. View results: See fl oz, ml, cups, and formula instantly.

Conversion Formulas

To convert grams to US fluid ounces:

$$\text{fl oz} = \frac{m_g}{\rho \times 29.574}$$

To convert grams to UK fluid ounces, divide by $28.413$ instead of $29.574$. Where $m_g$ is mass in grams and $\rho$ is density in $g/mL$. For example, $100\ g$ of water equals about $3.38$ US fl oz because $100 / (1.0 \times 29.574) \approx 3.38$.

To convert fluid ounces back to grams:

$$m_g = \text{fl oz} \times V_{factor} \times \rho$$

Where $V_{factor}$ is $29.574$ for US fl oz or $28.413$ for UK fl oz.

US vs UK Fluid Ounces

A US fluid ounce equals $29.574\ mL$ while a UK imperial fluid ounce equals $28.413\ mL$. The difference matters in baking and cooking when following international recipes. Always confirm which system your recipe uses before converting.

For related tools, try our Grams in ml Converter, Grams to Teaspoons Converter, or Fluid Ounces to Pounds Converter.