Buttermilk Substitute Measurements

1/4 Cup Buttermilk

Use the same amount (¼ cup milk + ¾ tsp vinegar) as the buttermilk you are replacing

Best for small recipes

Close match

For buttermilk measurements, use 1:1 ratio with these conversions: 1/4 cup = 1/4 cup milk + 3/4 tsp vinegar, 1/2 cup = 1/2 cup milk + 1 1/2 tsp vinegar, 1 cup = 1 cup milk + 1 tbsp vinegar.

Compare all 6 buttermilk substitutes

Learn exact measurements for buttermilk substitutes in all common amounts. Complete conversion guide with ratios for 1/4 cup to 2 cups.

Other buttermilk substitutes

Ranked, with the exact amount to use

21/2 Cup Buttermilk
Close match
Use the same amount (½ cup milk + 1 ½ tsp vinegar)
For 1/2 cup buttermilk, use 1/2 cup milk with 1 1/2 teaspoons vinegar.
What changes
Good for medium amounts in recipes like biscuits or small cakes.
Best for
medium recipes, biscuits, small cakes, 1/2 cup measurements, most buttermilk recipes
Mix 1/2 cup milk with 1 1/2 teaspoons white vinegar per 1/2 cup of buttermilk. Let sit for 5-10 minutes until it curdles. Use whole milk for best results.
31 Cup Buttermilk
Close match
Use the same amount (1 cup milk + 1 tbsp vinegar)
For 1 cup buttermilk, use 1 cup milk with 1 tablespoon vinegar.
What changes
Perfect for standard amounts in recipes like cakes or large batches of pancakes.
Best for
standard recipes, cakes, large batches, 1 cup measurements, most buttermilk recipes
Mix 1 cup milk with 1 tablespoon white vinegar per 1 cup of buttermilk. Let sit for 5-10 minutes until it curdles. Use whole milk for best results.
42 Cups Buttermilk
Close match
Use the same amount (2 cups milk + 2 tbsp vinegar)
For 2 cups buttermilk, use 2 cups milk with 2 tablespoons vinegar.
What changes
Good for large amounts in recipes like large cakes or multiple batches.
Best for
large recipes, large cakes, multiple batches, 2 cup measurements, most buttermilk recipes
Mix 2 cups milk with 2 tablespoons white vinegar per 2 cups of buttermilk. Let sit for 5-10 minutes until it curdles. Use whole milk for best results.
53/4 Cup Buttermilk
Close match
Use the same amount (¾ cup milk + 2 ¼ tsp vinegar)
For 3/4 cup buttermilk, use 3/4 cup milk with 2 1/4 teaspoons vinegar.
What changes
Good for medium-large amounts in recipes like large muffins or medium cakes.
Best for
medium-large recipes, large muffins, medium cakes, 3/4 cup measurements, most buttermilk recipes
Mix 3/4 cup milk with 2 1/4 teaspoons white vinegar per 3/4 cup of buttermilk. Let sit for 5-10 minutes until it curdles. Use whole milk for best results.

How it behaves in this recipe

When using buttermilk substitute measurements, the goal is to maintain the exact volume while providing the correct acidity ratio. The recommended measurements work because they maintain the 1:1 volume ratio while providing the proper acid-to-milk ratio for authentic buttermilk functionality.

Cooking tips

For 1/4 cup buttermilk, use 1/4 cup milk + 3/4 tsp vinegar for small recipes
When making 1/2 cup buttermilk, use 1/2 cup milk + 1 1/2 tsp vinegar for medium recipes
For 1 cup buttermilk, use 1 cup milk + 1 tbsp vinegar for standard recipes
In 2 cups buttermilk, use 2 cups milk + 2 tbsp vinegar for large recipes
For 3/4 cup buttermilk, use 3/4 cup milk + 2 1/4 tsp vinegar for medium-large recipes
When measuring buttermilk substitutes, always use the same total volume
For buttermilk substitutes, let the mixture sit for 5-10 minutes before using
In buttermilk substitutes, use whole milk for best texture and flavor

Notes on buttermilk

For 1/4 cup buttermilk: Use 1/4 cup milk + 3/4 tsp vinegar
For 1/2 cup buttermilk: Use 1/2 cup milk + 1 1/2 tsp vinegar
For 1 cup buttermilk: Use 1 cup milk + 1 tbsp vinegar
For 2 cups buttermilk: Use 2 cups milk + 2 tbsp vinegar
For 3/4 cup buttermilk: Use 3/4 cup milk + 2 1/4 tsp vinegar

Frequently asked questions

How much milk and vinegar for 1 cup buttermilk?

For 1 cup buttermilk, use 1 cup milk + 1 tablespoon white vinegar. Let sit for 5-10 minutes until it curdles.

What's the ratio for 1/2 cup buttermilk substitute?

For 1/2 cup buttermilk, use 1/2 cup milk + 1 1/2 teaspoons white vinegar. Let sit for 5-10 minutes until it curdles.

How do I make 1/4 cup buttermilk substitute?

For 1/4 cup buttermilk, use 1/4 cup milk + 3/4 teaspoon white vinegar. Let sit for 5-10 minutes until it curdles.

What's the measurement for 2 cups buttermilk substitute?

For 2 cups buttermilk, use 2 cups milk + 2 tablespoons white vinegar. Let sit for 5-10 minutes until it curdles.

How much vinegar for 3/4 cup buttermilk?

For 3/4 cup buttermilk, use 3/4 cup milk + 2 1/4 teaspoons white vinegar. Let sit for 5-10 minutes until it curdles.

Buttermilk Substitute Measurements

Other buttermilk substitutes

21/2 Cup Buttermilk

31 Cup Buttermilk

42 Cups Buttermilk

53/4 Cup Buttermilk