How Much Is 1 Fluid Ounce of Water in Grams?
Converting 1 fluid ounce of water to grams gives 29.57 g. One fluid ounce of water weighs 29.57g. This conversion is specific to water because each ingredient has a different density.
Formula and Step-by-Step
- Start with 1 fluid ounce of water
- 1 fluid ounce of water = 29.57g
- 1 × 29.57 = 29.57g
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Mental Math Shortcut
For 1 fluid ounce of water, just remember: 29.57g. Double it for 2 fluid ounces (59.15g), halve it for a half fluid ounce (14.79g).
Measuring Tip
For liquids, place your measuring cup on a flat surface and read at eye level. The bottom of the meniscus (the curve at the surface) should align with the measurement line.
Water at Different Amounts
How water scales across common fluid ounces measurements. Your amount (1 fluid ounce) is highlighted.
For reference, 1 fluid ounce of water (29.57g) is close in weight to a slice of bread (30g).
Other Amounts of Water
| Fluid Ounces | US Grams | UK Fluid Ounce |
|---|---|---|
| 1 fluid ounce | 29.57 g | 28.41 g |
| 2 fluid ounces | 59.15 g | 56.83 g |
| 3 fluid ounces | 88.72 g | 85.24 g |
| 4 fluid ounces | 118.30 g | 113.65 g |
| 5 fluid ounces | 147.87 g | 142.06 g |
| 6 fluid ounces | 177.44 g | 170.48 g |
| 8 fluid ounces | 236.59 g | 227.30 g |
| 10 fluid ounces | 295.74 g | 284.13 g |
| 12 fluid ounces | 354.89 g | 340.95 g |
| 16 fluid ounces | 473.18 g | 454.60 g |
Understanding the Units
What is a Fluid Ounce?
A US fluid ounce (fl oz) is a unit of volume equal to 29.574 milliliters or 1/8 of a cup. It measures liquid volume and should not be confused with the ounce (oz), which measures weight.
What is a Gram?
Weighing ingredients in grams eliminates the variability of volume measurements. A cup of flour can weigh anywhere from 120g to 160g depending on how it was scooped, but 120g of flour is always 120g of flour.