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How Much Is 1 Cup of Buttermilk in Ounces?

Converting 1 cup of buttermilk to ounces gives 8.64 oz. One cup of buttermilk weighs 245g (8.64 oz). This conversion is specific to buttermilk because each ingredient has a different density.

1 cup of buttermilk
=
8.64oz
Result using all cup standards info
8.64 oz (US) 9.13 oz (Metric Cup) 10.38 oz (Imperial Cup)
1 cup of buttermilk is also
8.64

Formula and Step-by-Step

cups × 245g/cup ÷ 28.3495g/oz = ounces
  1. Start with 1 cup of buttermilk
  2. 1 cup of buttermilk = 245g
  3. 1 × 245 = 245g
  4. Convert grams to ounces: 245 ÷ 28.3495 = 8.64 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 cups measurements. Your amount (1 cup) is highlighted.

0.25 cups2.16 oz0.33 cups2.85 oz0.5 cups4.32 oz0.75 cups6.48 oz1 cup8.64 oz1.5 cups12.96 oz2 cups17.28 oz3 cups25.93 oz

For reference, 1 cup of buttermilk (245g) is close in weight to a cup of water (237g).

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
1.5 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?

A cup is a US customary unit of volume equal to 236.588 milliliters or 8 fluid ounces. It is the most common volume measurement in American recipes. One cup can be divided into 16 tablespoons or 48 teaspoons.

What is an Ounce?

Ounces are commonly used in US recipes for cheese, meat, chocolate, and other ingredients sold by weight. Many kitchen scales offer both gram and ounce readings.

Frequently Asked Questions

About 8.64 oz, based on buttermilk having a density of 245g per cup. The exact amount depends on how the ingredient is measured and the specific product.
Multiply the number of cups by 245 (grams per cup for buttermilk), then divide by 28.3495 to convert grams to ounces. For 1 cup: 1 × 245 = 245g, then 245 ÷ 28.3495 = 8.64 oz.
For the most accurate results, weigh buttermilk on a kitchen scale. If measuring by volume, use a liquid measuring cup on a flat surface and read the level at eye height.
Temperature has a minimal effect on most cooking liquids. The density of buttermilk changes slightly with temperature, but the difference is usually less than 1-2% between refrigerator and room temperature. This conversion assumes room temperature.
Reverse the conversion: 8.64 oz × 28.3495 = 245g, then 245g ÷ 245 = 1 cup. Or use the Ounces to Cups converter.