Convert Buttermilk from Cup (US)

How much is 1 US cup of buttermilk?

1 US cup of buttermilk (cultured buttermilk) is 244.8 grams, about 8.63 ounces. 0.5 US cups of buttermilk is 122.4 grams and 2 US cups is 489.6 grams. Use the converter below for any amount.

Buttermilk is a tangy, slightly acidic dairy liquid used in pancakes, cakes, quick breads, and marinades. One metric cup (250 ml) weighs 255 g (8.99 oz). Despite its name, it contains very little butter: modern buttermilk is made by culturing low-fat milk with bacterial cultures.

Recipes often call for buttermilk by volume, but measuring by weight gives more consistent results, especially when scaling. This page converts buttermilk between grams, cups, millilitres, fluid ounces, and more.

Also known as

  • cultured buttermilk
  • sour milk

Buttermilk Calculator

Out of buttermilk? Calculate the exact milk plus lemon juice or white vinegar to mix as a substitute.

Buttermilk Substitute Calculator

Milk is thinner and less acidic than buttermilk. To substitute, stir 1 tablespoon of lemon juice or white vinegar into 1 cup of milk, then let it sit for a few minutes until it curdles slightly. See our Milk converter.

Lemon juice stirred into regular milk makes a quick buttermilk substitute. Use 1 tablespoon of lemon juice per 1 cup of milk, stir, and let it curdle for a few minutes before using. See our Lemon Juice converter.

Plain yoghurt is thicker than buttermilk but shares the tang and acidity. To use yoghurt in place of buttermilk, stir 2 to 3 tablespoons of milk into 1 cup of yoghurt to match the pourable texture. See our Plain Yoghurt converter.

Sour cream is thick and spoonable, while buttermilk is thin and pourable. To use sour cream in place of buttermilk, thin it with milk in a 3:1 ratio until pourable; the tang and acidity stay close. See our Sour Cream converter.

Out of buttermilk? See buttermilk substitutes →

No measuring cups? The tool below gets you close, and a measuring cup set keeps every batch the same.

Buttermilk Measurement Converter

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Common Buttermilk Conversions

Here are the most common buttermilk conversions from cups (US) to grams.

Cups (US)Grams
0.25 cups (US)61.2 g
0.5 cups (US)122.4 g
0.75 cups (US)183.6 g
1 cup (US)244.8 g
1.25 cups (US)306 g
1.5 cups (US)367.2 g
2 cups (US)489.6 g
2.5 cups (US)612 g
3 cups (US)734.4 g

Buttermilk Conversion Chart

The conversion chart below gives a quick reference for converting buttermilk from Cup (US) to other measurements.

cup(US)cupgramsouncestbsptspmlfl oz
0.25 cup (US)0.24 cup61.2 g2.16 oz4 tbsp12 tsp60 ml2.03 fl oz
0.5 cup (US)0.48 cup122.4 g4.32 oz8 tbsp24 tsp120 ml4.06 fl oz
1 cup (US)0.96 cup244.8 g8.63 oz16 tbsp48 tsp240 ml8.12 fl oz
2 cup (US)1.92 cup489.6 g17.26 oz32 tbsp96 tsp480 ml16.23 fl oz

Frequently Asked Questions

How much is 1 US cup of buttermilk?
1 US cup of buttermilk is 244.8 grams, or 8.63 ounces. The ratio is fixed, so 0.5 US cups of buttermilk is 122.4 grams and 2 US cups is 489.6 grams. Whatever unit your recipe uses, enter the amount in the converter above or read the conversion chart on this page for the most common quantities. Open the buttermilk converter
How many grams is 1 US cup of buttermilk?
1 US cup of buttermilk is 244.8 grams. The conversion scales in a straight line, so 0.5 US cups is 122.4 grams and 2 US cups is 489.6 grams. Multiply or divide that figure to match whatever your recipe needs, or use the converter above for an exact grams reading at any amount.
How many US cups of buttermilk is 244.8 grams?
244.8 grams of buttermilk is 1 US cup. The conversion works the same in reverse, so you can switch between US cups and grams without changing the result. This helps when a recipe lists one unit but you would rather measure in the other. The converter above and the chart below cover both directions for any amount.

Measurement Options

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