Convert Buttermilk from Fluid Ounces to Cup (US)

How many US cups is 1 fluid ounce of buttermilk?

1 fluid ounce of buttermilk (cultured buttermilk) is 0.12 US cups. 2 fluid ounces of buttermilk is 0.25 US cups. 1/2 fluid ounce of buttermilk is 0.06 US cups. 1/4 fluid ounce (0.25 fluid ounce) of buttermilk is 0.03 US cups. 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 jug? The tool below gives a good estimate, and a glass measuring jug makes liquids easier to read.

Buttermilk Measurement Converter

Enter a value and pick your units.

Result

0 Cup (US)

Common Buttermilk Conversions

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

Fluid OuncesCups (US)
1 fl oz0.12 cups (US)
2 fl oz0.25 cups (US)
4 fl oz0.49 cups (US)
6 fl oz0.74 cups (US)
8 fl oz0.99 cups (US)
12 fl oz1.48 cups (US)
16 fl oz1.97 cups (US)

Buttermilk Conversion Chart

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

fl ozcup(US)cupgramsouncestbsptspml
1 fl oz0.12 cup (US)0.12 cup30.16 g1.06 oz1.97 tbsp5.91 tsp29.57 ml
2 fl oz0.25 cup (US)0.24 cup60.33 g2.13 oz3.94 tbsp11.83 tsp59.14 ml
4 fl oz0.49 cup (US)0.47 cup120.65 g4.25 oz7.89 tbsp23.66 tsp118.29 ml
6 fl oz0.74 cup (US)0.71 cup180.98 g6.38 oz11.83 tbsp35.49 tsp177.43 ml
8 fl oz0.99 cup (US)0.95 cup241.31 g8.51 oz15.77 tbsp47.31 tsp236.57 ml
12 fl oz1.48 cup (US)1.42 cup361.96 g12.76 oz23.66 tbsp70.97 tsp354.86 ml
16 fl oz1.97 cup (US)1.89 cup482.61 g17.01 oz31.54 tbsp94.63 tsp473.15 ml

Frequently Asked Questions

How many US cups is 1 fluid ounce of buttermilk?
1 fluid ounce of buttermilk is 0.12 US cups. The ratio is fixed, so 2 fluid ounces of buttermilk is 0.25 US cups and 0.5 fluid ounces is 0.06 US cups. Use the converter above for any quantity, or check the conversion chart on this page for the most common amounts at a glance. Open the buttermilk converter
How many US cups is 1.5 fluid ounces of buttermilk?
1.5 fluid ounces of buttermilk is 0.18 US cups. The ratio is fixed, so 1 fluid ounce of buttermilk is 0.12 US cups and 2 fluid ounces is 0.25 US cups. Type any other amount into the converter above for the exact figure, or use the chart below for the common ones.
How many US cups is 2 fluid ounces of buttermilk?
2 fluid ounces of buttermilk is 0.25 US cups. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 fluid ounce of buttermilk is 0.12 US cups, and you can multiply or divide that figure to match whatever your recipe needs. Enter any amount in the converter above for an exact US cups reading.
How many fluid ounces of buttermilk is 0.12 US cups?
0.12 US cups of buttermilk is 0.97 fluid ounces. The conversion works the same in reverse, so you can switch between US cups and fluid ounces without changing the result. This helps when a recipe lists fluid ounces but you would rather weigh or measure in US cups. The converter above and the chart below cover both directions for any amount.
How many US cups is 1 fluid ounce of cultured buttermilk?
Cultured buttermilk is another name for buttermilk, so 1 fluid ounce of cultured buttermilk is 0.12 US cups, exactly the same as buttermilk. The figure does not change with the name: 2 fluid ounces is 0.25 US cups and 0.5 fluid ounces is 0.06 US cups. Use the converter above for any quantity, or read the conversion chart on this page for the most common amounts.
Are buttermilk and cultured buttermilk the same thing?
Yes. Cultured buttermilk is another name for buttermilk, so they are the same ingredient and convert identically. 1 fluid ounce of buttermilk is 0.12 US cups under either name, and 2 fluid ounces is 0.25 US cups. Recipes use the two names interchangeably, so you can follow either one without changing quantities or weighing any differently.
What is 1/2 fl oz buttermilk in US cups?
1/2 fluid ounce of buttermilk is 0.06 US cups. The ratio is fixed, so 1 fluid ounce of buttermilk is 0.12 US cups and 2 fluid ounces is 0.25 US cups. Half measures come up often when scaling a recipe down, and the figure divides cleanly. Use the converter above for any other amount, or the chart below for the common ones.
What is 1/4 fl oz buttermilk in US cups?
1/4 fluid ounce (0.25 fluid ounce) of buttermilk is 0.03 US cups. The ratio is fixed, so 1 fluid ounce of buttermilk is 0.12 US cups and 2 fluid ounces is 0.25 US cups. Quarter amounts often come up when scaling a recipe down step by step, and the figure divides cleanly. Use the converter above for any other quantity, or the chart below for the most common amounts.

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