how much baking powder to a cup of flour

Use 1 teaspoon of baking powder per 1 cup of all-purpose flour for a typical cake, muffin, or quick bread batter.

Basic rule of thumb

• For most everyday recipes, a good starting point is:
  • 1 cup (about 120–125 g) all-purpose flour + 1 teaspoon baking powder.

• This gives enough lift for light, tender cakes, muffins, and quick breads without a bitter or soapy taste.

When to adjust the amount

• Very light cakes (like sponge or some snack cakes):
  • Often use 1½ to 2 teaspoons baking powder per cup of flour.

• Muffins and quick breads:
  • Usually stay in the 1 to 1½ teaspoon per cup range, depending on how tall and domed you want them.

• Cookies:
  • Often need less—about ½ to 1 teaspoon per cup of flour—since they should spread more than rise.

Special flours and self-raising swaps

• To mimic self-raising flour with plain/all-purpose flour:
  • Many bakers use roughly 5% baking powder by weight: about 5–7 g baking powder per 100 g flour.

* A common home shortcut is about 2 teaspoons baking powder per 1 cup (around 150 g) flour when making “self-rising” style flour mixes.

• Whole wheat or very dense flours:
  • May need slightly more leavener because they are heavier; some guides suggest starting above 1 teaspoon per cup and adjusting based on results.

Practical tips

• If your bakes are dense and don’t rise much:
  • Check that your baking powder is fresh, then consider nudging up toward 1½ teaspoons per cup of flour.

• If they rise a lot then collapse or taste bitter:
  • You are likely using too much baking powder; reduce toward 1 teaspoon or slightly less per cup.

TL;DR: For “how much baking powder to a cup of flour,” start with 1 teaspoon per cup of all-purpose flour, then adjust a little up or down based on the type of baked good and how you like the texture.