How Much Is 1.31 Cups of Buttermilk in Ounces?
1.31 cups of buttermilk weighs 11.32 oz. This is based on buttermilk having a density of 245g per cup. Because cups measure volume and ounces measure weight, the result depends on the ingredient, and a different ingredient would give a different result for the same 1.31 cups.
Formula and Step-by-Step
- Start with 1.31 cups of buttermilk
- 1 cup of buttermilk = 245g
- 1.31 × 245 = 320.95g
- Convert grams to ounces: 320.95 ÷ 28.3495 = 11.32 oz
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
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.
Buttermilk at Different Amounts
How buttermilk scales across common cups measurements. Your amount (1.31 cups) is highlighted.
For reference, 1.31 cups of buttermilk (320.95g) is close in weight to a can of soup (305g).
Other Amounts of Buttermilk
| Cups | US Ounces | Metric Cup | Imperial Cup |
|---|---|---|---|
| 0.25 cups | 2.16 oz | 2.28 oz | 2.59 oz |
| 0.33 cups | 2.85 oz | 3.01 oz | 3.42 oz |
| 0.5 cups | 4.32 oz | 4.57 oz | 5.19 oz |
| 0.75 cups | 6.48 oz | 6.85 oz | 7.78 oz |
| 1 cup | 8.64 oz | 9.13 oz | 10.38 oz |
| 1.31 cups | 11.32 oz | 11.96 oz | 13.60 oz |
| 1.5 cups | 12.96 oz | 13.70 oz | 15.57 oz |
| 2 cups | 17.28 oz | 18.26 oz | 20.76 oz |
| 3 cups | 25.93 oz | 27.40 oz | 31.14 oz |
| 4 cups | 34.57 oz | 36.53 oz | 41.52 oz |
| 5 cups | 43.21 oz | 45.66 oz | 51.89 oz |
Understanding the Units
What is a Cup?
There are three cup standards used worldwide. The US cup (236.588 ml) is used in American recipes. The metric cup (250 ml) is standard in Australia, New Zealand, and some parts of Asia. The imperial cup (284.131 ml) appears in older British and Canadian recipes. A metric cup holds about 5.7% more than a US cup, while an imperial cup holds about 20% more. Using the wrong standard can noticeably affect a recipe.
What is an Ounce?
Weight ounces and fluid ounces are different measurements. A fluid ounce measures volume (29.574 ml), while an ounce measures weight (28.35g). They only align for water, where 1 fl oz weighs approximately 1 oz.