Grams to Fluid Ounces Conversion Calculator
Enter the weight in grams below to calculate the volume in fluid ounces.
Result: Fluid Ounces
Do you want to convert fluid ounces to grams?
On this page:
Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.
Ethan has a PhD in astrophysics and is currently a satellite imaging scientist. He specializes in math, science, and astrophysics.
How to Convert Grams to Fluid Ounces
Since grams are a unit of mass and fluid ounces are a unit of volume, which are different physical quantities, we need to know one more physical quantity of the ingredient or substance to convert between them. In this case, we need to account for the density of the substance whenever we do a conversion.
Therefore, to convert between grams and fluid ounces of an ingredient or substance, we must either multiply or divide by its density, depending on which direction we are performing the conversion.
Grams to Fluid Ounces Formula
To convert a measurement in grams to fluid ounces, divide the weight by the density of the ingredient or material. Note that in order for this to work, the density must be in grams per fluid ounce (g/fl oz).
If the density is given in grams per milliliter (g/mL), then first multiply the density by 29.5735 to convert to g/fl oz.
For a density given in g/mL, you can use this simple formula to convert:
fluid ounces = grams / 29.5735 × density
Thus, the volume in fluid ounces is equal to the weight in grams divided by 29.5735 times the density (in g/mL) of the ingredient, substance, or material.
For example, here's how to convert 5 grams to fluid ounces for an ingredient with a density of 0.7 g/mL.
fluid ounces = 5 g / 29.5735 × 0.7 g/mL = 0.2415 fl oz
Gram to Fluid Ounce Conversion Table
| Weight in Grams: | Volume in Fluid Ounces of: | ||||
|---|---|---|---|---|---|
| Water | Milk | Cooking Oil | All Purpose Flour | Granulated Sugar | |
| 1 g | 0.034 fl oz | 0.033 fl oz | 0.038 fl oz | 0.064 fl oz | 0.04 fl oz |
| 2 g | 0.068 fl oz | 0.066 fl oz | 0.077 fl oz | 0.128 fl oz | 0.08 fl oz |
| 3 g | 0.101 fl oz | 0.098 fl oz | 0.115 fl oz | 0.192 fl oz | 0.12 fl oz |
| 4 g | 0.135 fl oz | 0.131 fl oz | 0.154 fl oz | 0.256 fl oz | 0.16 fl oz |
| 5 g | 0.169 fl oz | 0.164 fl oz | 0.192 fl oz | 0.32 fl oz | 0.2 fl oz |
| 6 g | 0.203 fl oz | 0.197 fl oz | 0.231 fl oz | 0.384 fl oz | 0.24 fl oz |
| 7 g | 0.237 fl oz | 0.23 fl oz | 0.269 fl oz | 0.447 fl oz | 0.28 fl oz |
| 8 g | 0.271 fl oz | 0.263 fl oz | 0.307 fl oz | 0.511 fl oz | 0.32 fl oz |
| 9 g | 0.304 fl oz | 0.295 fl oz | 0.346 fl oz | 0.575 fl oz | 0.36 fl oz |
| 10 g | 0.338 fl oz | 0.328 fl oz | 0.384 fl oz | 0.639 fl oz | 0.4 fl oz |
| 11 g | 0.372 fl oz | 0.361 fl oz | 0.423 fl oz | 0.703 fl oz | 0.44 fl oz |
| 12 g | 0.406 fl oz | 0.394 fl oz | 0.461 fl oz | 0.767 fl oz | 0.48 fl oz |
| 13 g | 0.44 fl oz | 0.427 fl oz | 0.5 fl oz | 0.831 fl oz | 0.52 fl oz |
| 14 g | 0.473 fl oz | 0.46 fl oz | 0.538 fl oz | 0.895 fl oz | 0.56 fl oz |
| 15 g | 0.507 fl oz | 0.492 fl oz | 0.576 fl oz | 0.959 fl oz | 0.6 fl oz |
| 16 g | 0.541 fl oz | 0.525 fl oz | 0.615 fl oz | 1.023 fl oz | 0.64 fl oz |
| 17 g | 0.575 fl oz | 0.558 fl oz | 0.653 fl oz | 1.087 fl oz | 0.68 fl oz |
| 18 g | 0.609 fl oz | 0.591 fl oz | 0.692 fl oz | 1.151 fl oz | 0.72 fl oz |
| 19 g | 0.642 fl oz | 0.624 fl oz | 0.73 fl oz | 1.214 fl oz | 0.76 fl oz |
| 20 g | 0.676 fl oz | 0.657 fl oz | 0.769 fl oz | 1.278 fl oz | 0.8 fl oz |
When to Convert Grams to Fluid Ounces
Grams and fluid ounces are both commonly used to measure cooking ingredients.
For cooking applications, most chefs suggest measuring dry ingredients by weight rather than volume to improve accuracy in the measurements.[1] The density of dry ingredients can vary for a variety of reasons, such as compaction and clumping.
The best way to ensure an accurate conversion is to use a scale. When a scale is not available, a calculator like the one above is a good way to estimate the weight to volume conversion.
Another useful application of weight and volume conversions is chemistry. When performing chemical reactions by combining separate chemicals to produce a new chemical, one must know the exact amount of each chemical to add in order to maximize the yield of the reaction.
It is common to mix powdered chemicals with liquid, or aqueous, chemicals, and this is where it becomes very useful to convert between weights and volumes.[2]
Keep reading to learn more about each unit of measure.
What Is a Gram?
A gram is a unit of mass equal to 1/1,000 of a kilogram or 0.035274 ounces, and is equivalent to the mass of one cubic centimeter, or one milliliter, of water.
The gram, or gramme, is an SI unit of mass in the metric system. Grams can be abbreviated as g; for example, 1 gram can be written as 1 g.
A gram is frequently referred to as a unit of weight. While technically, a gram is a measure of mass, and weight is actually a measure of force, the two are equivalent as long as we are performing our calculations on Earth.
For example, an object with a mass of 1 gram weighs 1 gram on Earth, but only weighs one-sixth of that on the moon, yet still has the same mass.
Learn more about grams.
What Is a Fluid Ounce?
The US fluid ounce is a unit of volume equal to 1/16 of a pint or 1/8 of a cup. The fluid ounce is sometimes referred to as just an "ounce" but should not be confused with the unit of weight. One fluid ounce is equal to approximately 29.5735 milliliters, but in nutrition labeling, one fluid ounce is rounded to exactly 30 milliliters.[3]
The fluid ounce is a US customary unit of volume. Fluid ounces can be abbreviated as fl oz, and are also sometimes abbreviated as oz fl. For example, 1 fluid ounce can be written as 1 fl oz or 1 oz fl.
Learn more about fluid ounces.
References
- National Institute of Standards & Technology, Culinary Measurement Tips, https://www.nist.gov/pml/owm/culinary-measurement-tips
- CK-12 Foundation, Introductory Chemistry (CK-12) - 12.6: Mass-Volume Stoichiometry, https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/12%3A_Stoichiometry/12.06%3A_Mass-Volume_Stoichiometry
- U.S. Food & Drug Administration, Guidance for Industry: Guidelines for Determining Metric Equivalents of Household Measures, https://www.fda.gov/regulatory-information/search-fda-guidance-documents/guidance-industry-guidelines-determining-metric-equivalents-household-measures