Baking Powder Substitutes
Best substitute
¼ tsp baking soda + ½ tsp cream of tartar per 1 tsp baking powder
Mix and use immediately — it starts reacting once wet.
All tested swaps
Baking soda + cream of tartar
any baking¼ tsp baking soda + ½ tsp cream of tartar per 1 tsp baking powder
Mix and use immediately — it starts reacting once wet.
Why it works
Baking powder is just baking soda plus a dry acid (and starch). Combining soda with cream of tartar rebuilds it exactly.
Common mistake
Substituting plain baking soda 1:1 — it's ~3–4× stronger and needs an acid, so you get a metallic, soapy taste.
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