Baking Powder Substitute: Exact Swaps for Any Amount
For every 1 teaspoon of baking powder your recipe calls for, use 1/4 teaspoon of baking soda plus 1/2 teaspoon of cream of tartar. Mix them into the dry ingredients and bake as written, with no other changes. If you have no cream of tartar, use 1/4 teaspoon of baking soda plus 1/2 cup of an acidic liquid like buttermilk or plain yogurt, and reduce the recipe's other liquid by that same 1/2 cup so the batter doesn't go soupy.
Working with an odd amount, like 1 1/2 teaspoons or a tablespoon? Our free substitutions finder scales any baking powder substitute for you.
Updated August 2026
The one thing that makes every substitution obvious
Almost every article skips this, and it's the whole game.
Baking soda is a pure base. Chemically it's sodium bicarbonate, and by itself it does nothing. It only makes carbon dioxide, the gas that lifts your batter, when it meets an acid. If that sodium is the reason you're reading this, low sodium baking soda substitutes covers potassium bicarbonate and the ratios that keep the lift.
Baking powder is baking soda that already comes with its acid. Open a can and you'll find sodium bicarbonate, one or two powdered acids (usually cream of tartar, monocalcium phosphate, or sodium aluminum sulfate), and a little cornstarch. The cornstarch is a spacer. It absorbs stray moisture and keeps the base and the acid from reacting inside the can.
That's the entire difference. Baking powder is a complete leavening system in one spoon. Baking soda is half a system.
So substituting for baking powder is never really about finding a magic ingredient. It's about supplying the missing acid yourself. Once you see it that way, every row in the chart below stops being something to memorize and starts being obvious.
Baking powder substitute chart for 1 teaspoon
Every row replaces 1 teaspoon of baking powder. Scale up or down from there.
| What you have | Use for 1 tsp baking powder | Liquid adjustment | Notes |
|---|---|---|---|
| Baking soda + cream of tartar | 1/4 tsp baking soda + 1/2 tsp cream of tartar | None | The gold standard. Identical lift, no flavor change, no recipe rewrite |
| Baking soda + buttermilk | 1/4 tsp baking soda + 1/2 cup buttermilk | Cut other liquid by 1/2 cup | Adds tang and a softer crumb. Great in pancakes, muffins, biscuits |
| Baking soda + plain yogurt | 1/4 tsp baking soda + 1/2 cup plain yogurt | Cut other liquid by 1/2 cup | Thicker batter and a richer crumb. Thin the yogurt with milk if needed |
| Baking soda + lemon juice or vinegar | 1/4 tsp baking soda + 1 tbsp acid | Cut other liquid by 1 tbsp | Fast and effective, but the reaction starts instantly. Bake right away |
| Baking soda + molasses | 1/4 tsp baking soda + 1/4 cup molasses | Cut other liquid by 1/4 cup, and cut sugar by about 1/4 cup | Adds strong flavor and dark color. Best in spice cakes and gingerbread |
| Self-rising flour | Swap in self-rising flour for the all-purpose | None | Omit the baking powder AND the salt. See the section below |
| Whipped egg whites | Whip 2 to 3 whites to soft peaks and fold in | Cut other liquid slightly | Mechanical lift, no chemistry. Pancakes, waffles, sponge cakes |
| Club soda | Replace 1/2 cup of the liquid with club soda | Straight swap for liquid | Light, gentle lift only. Pancakes and waffles, nothing dense |
A note on the vinegar row. You'll see charts that say 1/2 teaspoon of vinegar per 1/4 teaspoon of baking soda. That's not enough acid to react with all the soda, and the leftover soda leaves a soapy, slightly bitter note. A tablespoon is closer to what the reaction actually needs.
Single-acting vs double-acting: the practical warning
Every can of baking powder on a US grocery shelf is double-acting. That means it reacts twice.
The first reaction happens the moment the powder gets wet, in the bowl. The second happens in the oven, when heat triggers the slower acid. That second wave is what gives you working time. You can mix a batter, scoop it, fill twelve muffin cups, and still get a good rise because most of the lift is held in reserve until the heat hits.
Every homemade substitute in the chart above is single-acting. Cream of tartar reacts on contact with moisture. So does buttermilk, yogurt, lemon juice, and vinegar. All of your gas is generated in the bowl, and it starts escaping immediately.
What to do about it:
- Whisk the soda and acid into the dry ingredients, not the wet ones, and combine at the very last second.
- Preheat the oven fully before you mix. Not while you mix.
- Get the batter into pans and into the oven within about 5 minutes.
- Don't rest, chill, or make the batter ahead. A pancake batter you leave for 20 minutes will make flat pancakes.
- If you're baking in batches, mix in batches too.
Follow those and a homemade substitute performs about as well as the can. Ignore them and you'll blame the substitute for a rise you let escape into the air.
Baking soda vs baking powder: side by side
These get confused constantly, and swapping them one-for-one wrecks a bake. Here's the honest comparison.
| Baking soda | Baking powder | |
|---|---|---|
| What it is | Sodium bicarbonate, a pure base | Baking soda + powdered acid + cornstarch |
| What it needs | An acid in the recipe | Nothing. It's complete |
| Lift per teaspoon | Roughly 3 to 4 times stronger | The baseline |
| When it reacts | Instantly on contact with acid and moisture | Once when wet, again in the oven |
| Effect on browning | Raises pH, which speeds browning noticeably | Nearly neutral, so much less browning effect |
| Typical use | Recipes with buttermilk, yogurt, molasses, citrus, brown sugar, cocoa, honey | Recipes with only neutral liquids like milk or water |
| Shelf life | About 2 years sealed, roughly 6 months once opened | 6 to 12 months once opened |
The browning row explains something you've probably noticed. Cookie recipes lean on baking soda far more often than cake recipes do. Raising the dough's pH accelerates the Maillard reaction, which is why soda-leavened cookies spread wider and come out deeply golden with crisp edges. Swap in baking powder and you get paler, puffier, more cakey cookies. Not ruined, just a different cookie.
Can you swap them one for one?
No, in both directions, and for different reasons.
Baking powder in place of baking soda: you'd need about 3 to 4 times as much to get the same lift. Replacing 1 teaspoon of soda means roughly 3 to 4 teaspoons of powder, which introduces a lot of extra acid salts and usually tastes metallic. You also lose the browning boost, and the recipe's own acid now has nothing to neutralize it, so the finished bake tastes sour.
Baking soda in place of baking powder: this is the one that fails hardest. Without added acid, the soda barely reacts, so the bake stays flat, and the leftover soda tastes soapy. This is exactly what the chart above fixes.
Self-rising flour, and the two things it forces you to change
Self-rising flour is soft wheat flour with leavening and salt already blended in. One cup contains roughly 1 1/2 teaspoons of baking powder and 1/4 teaspoon of salt.
To use it as a baking powder replacement:
- Swap self-rising flour for the all-purpose flour, cup for cup.
- Omit all the baking powder the recipe calls for.
- Omit all the salt the recipe calls for.
Skipping step three is the usual mistake, and salty biscuits are the result.
Check the math before you commit. If a recipe uses 2 cups of flour, the self-rising version brings about 3 teaspoons of baking powder with it. If the recipe only wanted 2 teaspoons, you're now 1 teaspoon over, which can taste bitter and cause a fast rise followed by a collapse. If the recipe wanted 4 teaspoons, you're short and it'll come out dense.
Self-rising flour is also lower in protein than all-purpose, typically around 8 to 9 percent. That's ideal for biscuits, pancakes, and tender quick breads. It's a poor choice for anything that needs structure, like a yeasted bread or a sturdy layer cake. Going the other direction, using baking powder instead of yeast explains which breads survive that swap and which ones don't.
Amounts you'll actually need
| Baking powder in the recipe | Baking soda | Cream of tartar | Optional cornstarch |
|---|---|---|---|
| 1/2 tsp | 1/8 tsp | 1/4 tsp | 1/8 tsp |
| 1 tsp | 1/4 tsp | 1/2 tsp | 1/4 tsp |
| 1 1/2 tsp | 3/8 tsp (1/4 + 1/8) | 3/4 tsp | 3/8 tsp |
| 2 tsp | 1/2 tsp | 1 tsp | 1/2 tsp |
| 1 tbsp (3 tsp) | 3/4 tsp | 1 1/2 tsp | 3/4 tsp |
| 2 tbsp (6 tsp) | 1 1/2 tsp | 3 tsp | 1 1/2 tsp |
The ratio to remember is 1 part baking soda to 2 parts cream of tartar.
Add the cornstarch column only if you're mixing a jar to keep on the shelf. It absorbs moisture and stops the two from reacting in storage. For a batch you're using in the next five minutes, skip it. Homemade mix stays good about a month in a sealed jar, less in a humid kitchen.
If a recipe gives leavening in tablespoons and your spoons are teaspoons, our cups to tablespoons converter handles the volume math.
Worked example: muffins calling for 2 teaspoons of baking powder
Here's a standard muffin base: 2 cups all-purpose flour, 2 teaspoons baking powder, 1/2 teaspoon salt, 1/2 cup sugar, 1 cup milk, 1 egg, and 1/3 cup melted butter. The can is empty. Two ways to save the batch.
Method A: cream of tartar
From the table, 2 teaspoons of baking powder becomes 1/2 teaspoon baking soda + 1 teaspoon cream of tartar.
Whisk both into the flour, sugar, and salt. Combine the wet ingredients separately. Mix the two together with about 10 strokes, until barely combined and still lumpy. Scoop into a pan you greased earlier and get it into an oven you already preheated to 400°F. Bake 18 to 20 minutes.
Nothing else changes. No liquid adjustment, no flavor difference. This is why cream of tartar is the swap worth keeping a jar of.
Method B: buttermilk
From the chart, 1 teaspoon of baking powder equals 1/4 teaspoon baking soda plus 1/2 cup buttermilk. Double it for 2 teaspoons: 1/2 teaspoon baking soda + 1 cup buttermilk.
The recipe already calls for 1 cup of milk, so the adjustment is clean. Replace the 1 cup of milk with 1 cup of buttermilk. Total liquid stays at 1 cup. Whisk the 1/2 teaspoon of baking soda into the flour.
Revised ingredient list: 2 cups flour, 1/2 tsp baking soda, 1/2 tsp salt, 1/2 cup sugar, 1 cup buttermilk (instead of milk), 1 egg, 1/3 cup melted butter.
What changes in the finished muffin: a faint tang, a softer and more tender crumb from the acid working on the gluten, and slightly more browning on the domes. Get them in the oven fast, because this version is single-acting and the soda starts working the second it touches the buttermilk.
No buttermilk on hand? Our buttermilk substitute guide shows the 10 minute version using milk and vinegar.
A word of caution on Method B. It only works this cleanly because the recipe's liquid (1 cup) was equal to or greater than the buttermilk you needed (1 cup). If the recipe had called for only 1/2 cup of milk, you couldn't add a full cup of buttermilk without wrecking the batter. In that case, swap what you can, use half the soda, and make up the rest with cream of tartar or self-rising flour.
Test your leavening before you blame the recipe
A flat cake is old leavening far more often than it's bad technique. Both tests take 15 seconds.
Baking powder test. Drop 1/2 teaspoon into 1/4 cup of hot water. It should erupt into vigorous, immediate foam that rises up the cup. A few lazy bubbles means it's spent. Use hot water, not cold. Cold water only triggers the first acid and can make good powder look dead.
Baking soda test. Drop 1/4 teaspoon into 2 teaspoons of white vinegar. It should fizz hard and instantly. Soda rarely goes bad in the true sense, but it absorbs moisture and odors from the cupboard, and clumped soda distributes unevenly through flour.
Shelf life in practice: baking powder holds full strength about 6 to 12 months after opening, sometimes less in a humid kitchen. Baking soda keeps about 2 years sealed and roughly 6 months opened for baking purposes. Write the date on the lid when you open it. The printed expiration date assumes an unopened container.
What too much leavening does
More is not more. Overdoing it fails in a specific and recognizable way.
The taste. Excess baking soda leaves an unmistakable soapy, metallic, faintly bitter finish that no amount of vanilla covers. Excess baking powder tastes chalky and slightly sour from the acid salts.
The structure. The batter inflates fast in the first several minutes, faster than the eggs and starch can set into a supporting structure. The bubbles grow too large, merge, and burst. The center then sinks, leaving a sunken middle with a coarse, tunneled, crumbly texture.
The color. Too much soda pushes the pH high enough to darken the crumb. A yellow cake goes tan, and cocoa turns reddish or almost black. That's a real effect, not your imagination.
A reliable ceiling: about 1 to 1 1/4 teaspoons of baking powder per cup of flour, or about 1/4 teaspoon of baking soda per cup of flour. If your substitute math lands well above that, recheck it before you bake.
FAQ
What is the best substitute for baking powder?
Baking soda plus cream of tartar, at 1/4 teaspoon soda to 1/2 teaspoon cream of tartar per teaspoon of baking powder. It's the only swap that needs no other changes to the recipe, adds no flavor, and delivers the same lift. Every other option makes you adjust liquid, salt, or sugar.
Can I use baking soda instead of baking powder?
Not on its own. Baking soda needs an acid to release gas, and without one you get a flat bake with a soapy taste. Add cream of tartar, buttermilk, yogurt, lemon juice, or vinegar in the amounts from the chart above and it works fine.
What is the baking soda equivalent of 1 teaspoon of baking powder?
About 1/4 teaspoon of baking soda, because soda is roughly 3 to 4 times stronger by volume. That 1/4 teaspoon only performs if you also supply an acid, such as 1/2 teaspoon of cream of tartar or 1/2 cup of buttermilk.
How much baking powder replaces 1 teaspoon of baking soda?
Roughly 3 to 4 teaspoons, and it's a swap worth avoiding. That much powder often tastes metallic, and you lose the browning boost soda provides. The recipe's own acid also goes unneutralized, which can leave a sour edge.
Does homemade baking powder substitute work in cakes?
Yes, with one condition: get the batter into a fully preheated oven within about 5 minutes of mixing. The substitute is single-acting, so all the gas forms in the bowl and starts escaping right away. Cakes have the longest bench time of any bake, so this matters most here.
Can I make baking powder ahead and store it?
Yes. Mix 1 part baking soda, 2 parts cream of tartar, and 1 part cornstarch by volume, then keep it in a sealed jar away from the stove. The cornstarch keeps moisture out. Use it within about a month and test it with hot water before a big bake.
What can I use if I have no cream of tartar and no buttermilk?
Plain yogurt is the next best option, at 1/2 cup per teaspoon of baking powder, with the recipe's liquid cut by the same amount. After that, lemon juice or vinegar at 1 tablespoon per 1/4 teaspoon of soda. For pancakes and waffles specifically, whipped egg whites folded in at the end give real lift with no chemistry at all.
Why did my cake taste soapy?
Unreacted baking soda, almost always. Either the recipe had more soda than its acid could handle, or a substitution supplied too little acid. Recheck your ratios, and don't exceed about 1/4 teaspoon of baking soda per cup of flour unless the recipe is genuinely acidic.
Related guides
- Buttermilk Substitute for the acid half of most of these swaps
- Egg Substitute for Baking for the other structural ingredient people run out of
- Substitutions Finder to look up any swap with exact ratios
- Cups to Tablespoons Converter for scaling leavening amounts
