How Much Is 9 Fluid Ounces of Buttermilk in Ounces?
9 fluid ounces of buttermilk equals 9.72 oz. Buttermilk has a density of 245g per cup (30.63g per fluid ounce), which means it's relatively light compared to other common cooking ingredients. For comparison, 9 fluid ounces of honey would be 13.49 oz.
Formula and Step-by-Step
- Start with 9 fluid ounces of buttermilk
- 1 fluid ounce of buttermilk = 30.63g
- 9 × 30.63 = 275.63g
- Convert grams to ounces: 275.63 ÷ 28.3495 = 9.72 oz
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.
Buttermilk at Different Amounts
How buttermilk scales across common fluid ounces measurements. Your amount (9 fluid ounces) is highlighted.
For reference, 9 fluid ounces of buttermilk (275.63g) is close in weight to a can of soup (305g).
Other Amounts of Buttermilk
| Fluid Ounces | US Ounces | UK Fluid Ounce |
|---|---|---|
| 1 fluid ounce | 1.08 oz | 1.04 oz |
| 2 fluid ounces | 2.16 oz | 2.08 oz |
| 3 fluid ounces | 3.24 oz | 3.11 oz |
| 4 fluid ounces | 4.32 oz | 4.15 oz |
| 5 fluid ounces | 5.40 oz | 5.19 oz |
| 6 fluid ounces | 6.48 oz | 6.23 oz |
| 8 fluid ounces | 8.64 oz | 8.30 oz |
| 9 fluid ounces | 9.72 oz | 9.34 oz |
| 10 fluid ounces | 10.80 oz | 10.38 oz |
| 12 fluid ounces | 12.96 oz | 12.45 oz |
| 16 fluid ounces | 17.28 oz | 16.61 oz |
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 an Ounce?
An ounce (oz) is a US customary unit of weight equal to 28.3495 grams or 1/16 of a pound. In cooking, "ounces" refers to weight (avoirdupois ounces), not fluid ounces which measure volume.