How Much Is 18 Tablespoons of Buttermilk in Ounces?
18 tablespoons of buttermilk weighs 9.72 oz. This is based on buttermilk having a density of 245g per cup. Because tablespoons measure volume and ounces measure weight, the result depends on the ingredient, and a different ingredient would give a different result for the same 18 tablespoons.
Formula and Step-by-Step
- Start with 18 tablespoons of buttermilk
- 1 tablespoon of buttermilk = 15.31g
- 18 × 15.31 = 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 tablespoons measurements. Your amount (18 tablespoons) is highlighted.
For reference, 18 tablespoons of buttermilk (275.63g) is close in weight to a can of soup (305g).
Other Amounts of Buttermilk
| Tablespoons | US Ounces | Metric Tablespoon | Australian Tablespoon |
|---|---|---|---|
| 1 tablespoon | 0.54 oz | 0.55 oz | 0.73 oz |
| 2 tablespoons | 1.08 oz | 1.10 oz | 1.46 oz |
| 3 tablespoons | 1.62 oz | 1.64 oz | 2.19 oz |
| 4 tablespoons | 2.16 oz | 2.19 oz | 2.92 oz |
| 5 tablespoons | 2.70 oz | 2.74 oz | 3.65 oz |
| 6 tablespoons | 3.24 oz | 3.29 oz | 4.38 oz |
| 8 tablespoons | 4.32 oz | 4.38 oz | 5.84 oz |
| 10 tablespoons | 5.40 oz | 5.48 oz | 7.31 oz |
| 12 tablespoons | 6.48 oz | 6.57 oz | 8.77 oz |
| 16 tablespoons | 8.64 oz | 8.77 oz | 11.69 oz |
| 18 tablespoons | 9.72 oz | 9.86 oz | 13.15 oz |
Understanding the Units
What is a Tablespoon?
A tablespoon (tbsp) is a US customary unit of volume equal to 14.787 milliliters, 3 teaspoons, or 1/16 of a cup. It is commonly used for measuring smaller amounts of ingredients.
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.