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Baking soda substitutes
Find substitutes for baking soda, with practical ratios and notes on texture, rise, moisture, flavour and calories.
What baking soda does in a recipe
Baking soda is pure alkali. It releases gas only when it meets acid and moisture, and it also speeds browning and weakens gluten — which is why soda breads are tender.
Substitution is about structure, not taste, and no table row overrides an allergy. If the swap is for gluten, egg, dairy or nut allergy, use a recipe written for that diet: allergen-free baking changes the structure of the recipe, not just one ingredient.
Substitutes and ratios
| Use | Ratio | Best for | What changes |
|---|---|---|---|
| Baking powder | 3 tsp per 1 tsp soda | cakes, cookies — but reduce the recipe's salt | Triples the sodium and may leave the crumb slightly tighter; drop the salt the recipe calls for. Calorie-neutral. |
| Potassium bicarbonate | 1 : 1 | anyone cutting sodium | Identical leavening with almost no sodium; a slightly mineral aftertaste in large amounts. |
| Whipped egg whites | 2 whites folded in, per tsp soda | light batters | Air replaces the gas; the batter must be handled gently. Adds protein, saves nothing in calories. |
Substitution ratios and techniques: standard kitchen reference tables. Calorie comparisons use USDA FoodData Central figures. Checked 2026-09-06.
Frequently asked questions
What happens if I use baking powder instead of soda and forget the salt?
The result rises but is saltier than intended, because powder is a third soda plus acids. The rule when substituting powder for soda is three times the amount and no extra salt.
Ingredients with a similar job
Baking powder
Baking powder is baking soda pre-mixed with an acid and a starch. It releases gas twice — a little on mixing, most on heating — and needs no other acid in the recipe.
Yeast
Yeast is a living leavener: it ferments sugars into gas and flavour over hours. It is not interchangeable with chemical leaveners, which work in minutes.
All ingredient substitutes
Browse the complete guide by the job each ingredient performs.
Track the ingredient you really used
TempoLife records the actual swap so the nutrition total reflects your plate, not the recipe you started with.