How To Make Baking Powder Out of Baking Soda

updated Jun 23, 2023
How To Make Baking Powder Out of Baking Soda
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Credit: Faith Durand

Baking powder and baking soda are both baking essentials. Depending on the specific recipe, you may need one or the other (or both). They are often used in making cakes, muffins, cupcakes, or any baked goods. In case you run out of it, did you know that you can make baking powder? Just combine 1 tablespoon baking soda and 2 tablespoons cream of tartar, and voila – you already have a homemade baking powder.

I don’t know about you, but I tend to run out of baking powder faster than baking soda. Knowing this simple formula has helped me out in a pinch. Here’s how to put baking soda and one other staple together to make baking powder.

Watch the video —->

The other ingredient you need is cream of tartar, which is a less-used baking staple. I always seem to have half a bottle of this around (since I don’t use it often!). The cream of tartar adds acidity to the baking soda to create baking powder.

You can make this baking powder ahead of time, and stash it away for when you need it, or do as I do and make it at the last minute when I find I’m out!

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You need baking soda and cream of tartar. (Image credit: Faith Durand)

How To Make Baking Powder Out of Baking Soda

Makes 3 tbsp baking powder

Nutritional Info


  • 1 tablespoon

    baking soda

  • 2 tablespoons

    cream of tartar


  • Tablespoon measuring spoon

  • Small whisk

  • Airtight container


  1. Mix the baking soda and cream of tartar: Mix very thoroughly with a whisk.

  2. Store in an airtight container: The mixture can clump up so be sure to store in an airtight, moisture-free container. This can be stored almost indefinitely, although if it gets old use this tip to check to see if it's still active enough to bake with.