Best Baking Soda Substitutes
Out of baking soda? These are the best baking soda substitutes you can use in cooking and baking — ranked by how well they work in most recipes. Whether you need a dairy-free swap, a pantry staple alternative, or just ran out mid-recipe, one of these 4 options will have you covered.
Baking Soda Substitution Options
Baking Powder
Use instead of Baking Soda
Baking powder contains baking soda but is less concentrated — you need 3x the amount. This works well but may leave a slightly metallic or salty taste. Best when baking powder is all you have.
¼ tsp Cream of Tartar + ½ tsp Cornstarch
Use instead of Baking Soda
Cream of tartar provides the acid that activates leavening, and cornstarch adds bulk. This combo replicates baking soda closely — ideal for cookies, cakes, and quick breads.
Potassium Bicarbonate + ¼ tsp Salt
Use instead of Baking Soda
Potassium bicarbonate is a sodium-free alternative to baking soda often used in low-sodium diets. Add a pinch of salt to compensate for sodium's flavor contribution. Use 1:1.
Baker's Ammonia (ammonium bicarbonate)
Use instead of Baking Soda
Used in traditional Scandinavian and German baking, baker's ammonia gives a very crisp texture. Best in thin, dry baked goods (crackers, springerle, pizzelles) where ammonia can fully evaporate during baking.
Frequently Asked Questions
What is the best substitute for baking soda?
The best substitutes for baking soda are Baking Powder, ¼ tsp Cream of Tartar + ½ tsp Cornstarch, Potassium Bicarbonate + ¼ tsp Salt. Baking powder contains baking soda but is less concentrated — you need 3x the amount. This works well but may leave a slightly metallic or salty taste. Best when baking powder is all you have.
Can I use ¼ tsp Cream of Tartar + ½ tsp Cornstarch instead of baking soda?
Cream of tartar provides the acid that activates leavening, and cornstarch adds bulk. This combo replicates baking soda closely — ideal for cookies, cakes, and quick breads.
How do I substitute baking soda in baking?
When substituting baking soda in baking, it's important to match the ratio carefully. Check the individual substitution notes above for exact measurements and tips for each swap.