The good news is that baking powder mostly consists of baking soda, so you can definitely use it as a substitute. However, ...

Fact checked by Marcus Reeves Looking for some substitutes for baking powder? Baking powder is one of those ingredients that ...

You cannot directly substitute one for the other. Instead, you have to make sure to modify the amounts and possibly add new ingredients when you swap baking soda for baking powder or vice versa.