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How Much Is 21 Grams of Buttermilk in Milliliters?

Converting 21 grams of buttermilk to milliliters gives 20.28 ml. Divide by the density of buttermilk (245g per cup). Each ingredient fills a different volume at the same weight.

21 grams of buttermilk
=
20.28ml
20.28

Formula and Step-by-Step

grams ÷ 245g/cup × 236.588 = milliliters
  1. Start with 21 grams of buttermilk
  2. 1 cup of buttermilk = 245g
  3. 21g ÷ 245g/cup = 0.09 cups × 236.588 = 20.28 milliliters

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 grams measurements. Your amount (21 grams) is highlighted.

5 g4.83 ml10 g9.66 ml21 g20.28 ml25 g24.14 ml50 g48.28 ml75 g72.42 ml100 g96.57 ml150 g144.85 ml

Other Amounts of Buttermilk

Grams Milliliters
5 grams 4.83 ml
10 grams 9.66 ml
21 grams 20.28 ml
25 grams 24.14 ml
50 grams 48.28 ml
75 grams 72.42 ml
100 grams 96.57 ml
150 grams 144.85 ml
200 grams 193.13 ml
250 grams 241.42 ml
500 grams 482.83 ml

Understanding the Units

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.

What is a Milliliter?

A milliliter (ml) is a metric unit of volume equal to 1/1000 of a liter. It is the standard volume measurement for cooking in most countries outside the US. One cup equals approximately 236.588 milliliters.

Frequently Asked Questions

About 20.28 ml, based on buttermilk having a density of 245g per cup. The exact amount depends on how the ingredient is measured and the specific product.
Divide the grams by 245 (grams per cup) to get cups, then multiply by 236.588 to get milliliters. For 21 grams: 21 ÷ 245 = 0.09 cups × 236.588 = 20.28 ml.
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: 20.28 ml ÷ 236.588 = 0.0857143 cups, then 0.0857143 × 245g/cup = 21g. Or use the Milliliters to Grams converter.