Ingredient Substitution Calculator

Ingredient substitutions save recipes when you’re missing something — but the ratios matter. Using a substitute at the wrong proportion changes taste, texture, moisture, and leavening in ways that can ruin an otherwise good dish. These formulas and ratios help you substitute confidently.

Leavening substitutions:

• 1 tsp baking powder = 1/4 tsp baking soda + 1/2 tsp cream of tartar
• 1 tsp baking soda = 3 tsp baking powder (reduces leavening power — results may vary)
• 1 packet active dry yeast (2.25 tsp) = 1.5 tsp instant yeast

Dairy substitutions:

• 1 cup buttermilk = 1 cup milk + 1 tbsp white vinegar or lemon juice (wait 5 min)
• 1 cup whole milk = 1/2 cup evaporated milk + 1/2 cup water
• 1 cup heavy cream = 3/4 cup milk + 1/4 cup butter (for cooking, not whipping)
• 1 cup butter = 7/8 cup vegetable oil (for baking; reduce other liquids slightly)

Egg substitutions (per egg):

• 1 flax egg = 1 tbsp ground flaxseed + 3 tbsp water (wait 5 min to gel)
• 3 tbsp aquafaba (liquid from canned chickpeas) = 1 whole egg
• 1/4 cup unsweetened applesauce = 1 egg (adds moisture and slight sweetness)

Sugar substitutions:

• 1 cup white sugar = 3/4 cup honey (reduce other liquids by 1/4 cup; reduce oven temp by 25°F)
• 1 cup white sugar = 1 cup packed brown sugar (adds molasses flavor)
• 1 cup sugar = 3/4 cup maple syrup (reduce liquids by 3 tbsp; add 1/4 tsp baking soda)

Worked example: Recipe needs 2 cups buttermilk and you have none. Substitution: 2 cups milk + 2 tbsp lemon juice → stir, wait 5 minutes → use in recipe.

Always taste-test after substituting and adjust seasoning as needed.