Baking Soda Substitute
Out of baking soda? In many recipes, baking powder can be used as an emergency substitute, but the amount is different. Use the calculator below to estimate a replacement, then review the notes before baking.
Baking Soda Substitute Calculator
Enter the amount of baking soda your recipe calls for.
Recipe calls for:
1 teaspoon baking soda
Use approximately:
1 tbsp baking powder
Equivalent baking powder weight: ≈ 12.0 g
Emergency substitution only: baking powder is not a perfect 1:1 replacement for baking soda. The substitution may change browning, spread, flavor, rise, sodium level, or texture.
What Is the Best Substitute for Baking Soda?
If you are completely out of baking soda, baking powder is often the simplest emergency replacement. A common rule of thumb is approximately 3 teaspoons of baking powder for every 1 teaspoon of baking soda.
This is not a perfect substitution because baking powder contains additional acidic ingredients and is formulated differently.
Can You Substitute Baking Powder for Baking Soda?
Yes, sometimes — but not 1:1.
Baking soda is primarily sodium bicarbonate. Baking powder contains sodium bicarbonate plus acidic components, so it is less concentrated as a direct sodium-bicarbonate source.
A common emergency substitution is about 3 teaspoons baking powder for 1 teaspoon baking soda. The recipe may rise, spread, brown, or taste differently.
Baking Soda to Baking Powder Conversion Chart
| Baking Soda | Baking Powder Substitute | Approx. Baking Powder Weight |
|---|---|---|
| 1/8 tsp | 3/8 tsp | ≈ 1.5 g |
| 1/4 tsp | 3/4 tsp | ≈ 3 g |
| 1/2 tsp | 1 1/2 tsp | ≈ 6 g |
| 3/4 tsp | 2 1/4 tsp | ≈ 9 g |
| 1 tsp | 3 tsp / 1 tbsp | ≈ 12 g |
| 1 1/2 tsp | 4 1/2 tsp / 1 1/2 tbsp | ≈ 18 g |
| 2 tsp | 6 tsp / 2 tbsp | ≈ 24 g |
| 1 tbsp | 3 tbsp | ≈ 36 g |
These are approximate emergency substitution amounts based on Cookometry's reference values of about 6 g per teaspoon for baking soda and 4 g per teaspoon for baking powder.
What If I Don't Have Baking Powder Either?
Alternatives depend heavily on the recipe. Here are the most practical options:
Cream of Tartar + Baking Soda
This combination is used to make a baking-powder-style mixture, but it still requires baking soda and therefore is not useful if you have no baking soda at all.
For approximately 1 teaspoon baking powder:
- 1/4 teaspoon baking soda
- 1/2 teaspoon cream of tartar
- 1/4 teaspoon cornstarch or tapioca starch
Useful for replacing baking powder — not useful when baking soda itself is unavailable.
Self-Rising Flour
Self-rising flour already contains leavening and salt and may work in certain recipes when replacing some or all of the all-purpose flour. However, using it changes multiple recipe ingredients simultaneously.
Best suited to recipes designed for self-rising flour or recipes that can tolerate broader ingredient adjustments.
Egg Whites / Mechanical Leavening
Whipped egg whites can add air and lift in certain cakes, pancakes, waffles, soufflé-style preparations, and similar recipes. They are not a chemical replacement for baking soda and may substantially change the recipe.
No Reliable Substitute
For some cookies, quick breads, cakes, and other baked goods, the best option may be to wait until baking soda is available rather than making a major substitution.
Can You Leave Baking Soda Out of a Recipe?
Sometimes a recipe may still bake, but removing baking soda can affect:
- rise
- texture
- spread
- browning
- acidity
- flavor
Effects vary widely by recipe.
Baking Soda Substitute for Cookies
Baking soda affects more than rise in cookies. It also influences spread, browning, pH, texture, and flavor.
Using baking powder instead may produce a thicker, puffier, or otherwise different cookie depending on the recipe.
If the recipe calls for 1 teaspoon baking soda and you have no baking soda, approximately 3 teaspoons baking powder is a common emergency starting point, but expect a different result.
Baking Soda Substitute for Cakes and Muffins
Baking powder can sometimes be a practical substitute because cakes and muffins rely on chemical leavening for rise. The approximate 3:1 baking-powder-to-baking-soda ratio is a useful starting point.
The recipe's acidity and other ingredients still matter, so follow a tested recipe whenever possible.
Baking Soda Substitute for Pancakes
Many pancake recipes already use baking powder, baking soda, or both. If replacing baking soda with baking powder, consider whether the recipe also contains acidic ingredients such as buttermilk.
Do not remove acidic ingredients automatically — they contribute to flavor and texture.
Baking Soda Substitute for Banana Bread
Banana bread recipes vary significantly. Some rely on baking soda because of recipe acidity, while others use baking powder or both.
A baking-powder substitution may change rise, texture, browning, and flavor. For a deeper look at how the two leaveners differ, see our baking soda vs baking powder guide.
Why Baking Soda Is Different from Baking Powder
Baking soda: sodium bicarbonate.
Baking powder: sodium bicarbonate + acidic ingredients + typically starch.
This difference is the reason substitutions are not 1:1. Learn more in our difference between baking soda and baking powder guide.
How Much Does Baking Soda Weigh?
Cookometry uses approximately 6 grams per teaspoon as a practical reference.
| Amount | Weight |
|---|---|
| 1/8 tsp | 0.75 g |
| 1/4 tsp | 1.5 g |
| 1/2 tsp | 3 g |
| 3/4 tsp | 4.5 g |
| 1 tsp | 6 g |
| 1 tbsp | 18 g |
Ingredient weights are approximate and can vary slightly by brand, humidity, compaction, and measuring method.