Fluid Ounces to Grams Conversion Calculator

Enter the volume in fluid ounces below to calculate the weight in grams.

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1 fl oz = 29.5735295625 g

How to Convert Fluid Ounces to Grams

Scales are used to measure weight

To convert a fluid ounce measurement to a gram measurement, multiply the volume by 29.57353 times the density of the ingredient or material.

You can use this simple formula to convert:

grams = fluid ounces × 29.57353 × ingredient density

Thus, the volume in grams is equal to the fluid ounces multiplied by 29.57353 times the density of the ingredient or material.

For example, here's how to convert 5 fluid ounces to grams for an ingredient with a density of 0.7 g/mL.
5 fl oz = 5 × 29.57353 × 0.7 = 103.507353 g

Fluid ounces and grams 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.

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 volume to weight conversion.

Keep reading to learn more about each unit of measure.

How Many Grams are in a Fluid Ounce?

The actual weight of a fluid ounce will vary depending on the density of the material. The table below shows how many grams of various wet and dry ingredients are in a fluid ounce.

Fluid ounce measurements converted to grams for commonly used ingredients.
Volume in Fluid Ounces: Weight in Grams of:
Water Milk Cooking Oil All Purpose Flour Granulated Sugar
1 fl oz 29.57 g 30.76 g 26.02 g 15.64 g 20.7 g
2 fl oz 59.15 g 61.51 g 52.05 g 31.29 g 41.4 g
3 fl oz 88.72 g 92.27 g 78.07 g 46.93 g 62.1 g
4 fl oz 118.29 g 123.03 g 104.1 g 62.58 g 82.81 g
5 fl oz 147.87 g 153.78 g 130.12 g 78.22 g 103.51 g
6 fl oz 177.44 g 184.54 g 156.15 g 93.87 g 124.21 g
7 fl oz 207.01 g 215.3 g 182.17 g 109.51 g 144.91 g
8 fl oz 236.59 g 246.05 g 208.2 g 125.16 g 165.61 g
9 fl oz 266.16 g 276.81 g 234.22 g 140.8 g 186.31 g
10 fl oz 295.74 g 307.56 g 260.25 g 156.44 g 207.01 g
11 fl oz 325.31 g 338.32 g 286.27 g 172.09 g 227.72 g
12 fl oz 354.88 g 369.08 g 312.3 g 187.73 g 248.42 g
13 fl oz 384.46 g 399.83 g 338.32 g 203.38 g 269.12 g
14 fl oz 414.03 g 430.59 g 364.35 g 219.02 g 289.82 g
15 fl oz 443.6 g 461.35 g 390.37 g 234.67 g 310.52 g
16 fl oz 473.18 g 492.1 g 416.4 g 250.31 g 331.22 g
17 fl oz 502.75 g 522.86 g 442.42 g 265.95 g 351.93 g
18 fl oz 532.32 g 553.62 g 468.44 g 281.6 g 372.63 g
19 fl oz 561.9 g 584.37 g 494.47 g 297.24 g 393.33 g
20 fl oz 591.47 g 615.13 g 520.49 g 312.89 g 414.03 g
21 fl oz 621.04 g 645.89 g 546.52 g 328.53 g 434.73 g
22 fl oz 650.62 g 676.64 g 572.54 g 344.18 g 455.43 g
23 fl oz 680.19 g 707.4 g 598.57 g 359.82 g 476.13 g
24 fl oz 709.76 g 738.16 g 624.59 g 375.47 g 496.84 g
25 fl oz 739.34 g 768.91 g 650.62 g 391.11 g 517.54 g
26 fl oz 768.91 g 799.67 g 676.64 g 406.75 g 538.24 g
27 fl oz 798.49 g 830.42 g 702.67 g 422.4 g 558.94 g
28 fl oz 828.06 g 861.18 g 728.69 g 438.04 g 579.64 g
29 fl oz 857.63 g 891.94 g 754.72 g 453.69 g 600.34 g
30 fl oz 887.21 g 922.69 g 780.74 g 469.33 g 621.04 g
31 fl oz 916.78 g 953.45 g 806.77 g 484.98 g 641.75 g
32 fl oz 946.35 g 984.21 g 832.79 g 500.62 g 662.45 g
33 fl oz 975.93 g 1,015 g 858.82 g 516.27 g 683.15 g
34 fl oz 1,006 g 1,046 g 884.84 g 531.91 g 703.85 g
35 fl oz 1,035 g 1,076 g 910.86 g 547.55 g 724.55 g
36 fl oz 1,065 g 1,107 g 936.89 g 563.2 g 745.25 g
37 fl oz 1,094 g 1,138 g 962.91 g 578.84 g 765.95 g
38 fl oz 1,124 g 1,169 g 988.94 g 594.49 g 786.66 g
39 fl oz 1,153 g 1,200 g 1,015 g 610.13 g 807.36 g
40 fl oz 1,183 g 1,230 g 1,041 g 625.78 g 828.06 g

Fluid Ounces

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 an "ounce" but should not be confused with the unit of mass. One fluid ounce is equal to just under 29.6 milliliters, but in nutrition labeling, one fluid ounce is rounded to exactly 30 milliliters.[2]

The fluid ounce is a US customary unit of volume. Fluid ounces can be abbreviated as fl oz, and are also sometimes abbreviated as fl. oz. or oz. fl.. For example, 1 fluid ounce can be written as 1 fl oz, 1 fl. oz., or 1 oz. fl..

Grams

A gram is the mass/weight equal to 1/1,000 of a kilogram and is roughly equivalent to the mass of one cubic centimeter of water.

The gram, or gramme, is an SI unit of weight in the metric system. Grams can be abbreviated as g; for example, 1 gram can be written as 1 g.

References

  1. National Institute of Standards & Technology, Metric Cooking Resources, https://www.nist.gov/pml/weights-and-measures/metric-cooking-resources
  2. 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