How Much Is 12 Fluid Ounces of Water in Grams?
12 fluid ounces of water weighs 354.89 g. This is based on water having a density of 236.59g per cup. Because fluid ounces measure volume and grams measure weight, the result depends on the ingredient, and a different ingredient would give a different result for the same 12 fluid ounces.
Formula and Step-by-Step
- Start with 12 fluid ounces of water
- 1 fluid ounce of water = 29.57g
- 12 × 29.57 = 354.89g
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
Liquid densities vary: oils weigh less per cup than water, while syrups and honey weigh more. This is why ingredient-specific conversions matter even for liquids.
Water at Different Amounts
How water scales across common fluid ounces measurements. Your amount (12 fluid ounces) is highlighted.
For reference, 12 fluid ounces of water (354.89g) is close in weight to a can of soda (355g).
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?
Fluid ounces measure how much space a liquid takes up, while ounces (oz) measure weight. 1 fluid ounce of water weighs close to 1 oz, but for other liquids like honey or oil, the weight per fluid ounce is different.
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.