1/4 Cup Baking Powder in Grams
1/4 cup of baking powder weighs 48 g (spooned and levelled, King Arthur Baking). Baking soda plus cream of tartar; double-acting, needs only moisture and heat. All the figures on this page are approximate conversions based on the King Arthur Baking value of 192 g per cup, so when a recipe really matters, verify with a kitchen scale.
Why a quarter cup is worth weighing
Quarter-cup amounts show up in small batches, test bakes and single servings — exactly the cooks where there is no margin for error. A large batch forgives a heavy hand; a small one does not, because the same absolute mistake is a far larger share of the total. Weighing a quarter cup is the cheapest insurance in the kitchen: one number on a scale, and the recipe comes out the same every time.
Spooned and levelled is the method behind the number, and it matters. Baking Powder is used for leavening cakes, pancakes and quick breads. That range of uses is part of why the conversion comes up so often: the same ingredient appears in everyday cooking and in precise baking, and the two situations demand different levels of accuracy. Grams cut through all of that: 48 g of baking powder is 48 g whatever the brand, the humidity or the size of your measuring cup.
Baking Powder cups to grams conversion table
| Cups | Grams | Tablespoons |
|---|---|---|
| 1/4 cup | 48 g | 4 |
| 1/3 cup | 64 g | 5.3 |
| 1/2 cup | 96 g | 8 |
| 2/3 cup | 128 g | 10.7 |
| 3/4 cup | 144 g | 12 |
| 1 cup | 192 g | 16 |
| 1 1/2 cups | 288 g | 24 |
| 2 cups | 384 g | 32 |
The tablespoon column shows how many tablespoons each amount equals: a quarter cup is 4 tablespoons, and one tablespoon of baking powder weighs about 12 g. A cup is 16 tablespoons, so the numbers in the table are just the cup weight divided by 16, rounded to one decimal place. For small amounts a scale that reads to the gram is far more reliable than a spoon, because a heaped tablespoon can weigh half as much again as a level one. Read the table from the 1/4-cup row outwards: every row is the cup weight times the fraction, so scaling a recipe up or down is simple multiplication.
How the weight was measured
Spooned and levelled means the ingredient is measured the way King Arthur Baking measures it: spooned and levelled. For baking powder, that gives 192 g per cup, and a quarter of that is 48 g. The source for the figure is King Arthur Baking, and the confidence in the value is high. King Arthur Baking publishes a standard ingredient weight chart that recipe developers use as a reference, and this page follows it exactly rather than averaging across sources, because an average of two different measuring methods is a number that matches nobody's cup.
Worked examples
Pancakes for two
A pancake breakfast for two people uses a teaspoon or two of baking powder — but a pancake morning for a crowd, or a batch of pancake mix to keep in a jar, uses 1/4 cup of baking powder, 48 g. The jar is the practical use: 48 g of baking powder mixed with flour, sugar and salt makes a pancake mix that keeps for a month. Weigh it once, mix the jar, and pancake morning is a matter of adding milk and egg.
Scones, a half batch
A half batch of scones — six small scones — uses a tablespoon of baking powder, not a quarter cup. But a bakery batch of scones for a café counter uses 1/4 cup of baking powder, 48 g, across many kilos of dough. The powder is the lift, and the weighed amount keeps every batch the same height. Weigh 48 g, sift it with the flour so it is evenly distributed, and handle the dough as little as possible so the scones stay tender.
A mug cake for one
A mug cake for one person uses a quarter teaspoon of baking powder — a tiny amount. The quarter cup figure, 48 g, matters when you scale up: a mug-cake mix jar for the month, or a classroom batch of mug cakes for thirty children, uses a quarter cup across the whole batch. The lesson is the same either way: baking powder is double-acting, so it lifts once when it meets liquid and again in the heat, and the batter must go into the oven or microwave promptly.
When a quarter cup matters
This conversion matters most when the recipe is small, the ingredient is potent, or the batch is a test. A quarter cup of a strong flavour or a powerful leavener can make or break a dish, and a test batch is only useful if it tells the truth about the full recipe. Weighing the quarter cup makes the test honest and the small batch repeatable.
Baking powder is double-acting: it releases gas when it meets liquid, and again when it heats up. That is why a batter made with baking powder must be cooked promptly — the first lift is already happening while the batter sits. A quarter cup — 48 g — is about twelve teaspoons, a bulk amount for a mix jar or a bakery batch, not a single bake. Weigh it, sift it with the flour, and use it within six months of opening, because old baking powder loses its lift.
Scaling a quarter cup up and down
The quarter-cup figure is a building block: every other amount is a simple multiple of it. Doubling a recipe that calls for 1/4 cup means weighing 96 g; halving it means 24 g, which is 2 tablespoons. A full cup is 192 g, and two cups is 384 g. Writing the recipe in grams at this point is worth doing: the next time you make it, you weigh 48 g straight into the bowl and skip the measuring cup altogether. If you are scaling a recipe for a different tin size, convert every ingredient to grams first and then multiply — scaling by volume compounds the error on every ingredient at once, while scaling by weight keeps each one exact.
Common mistakes with baking powder
- Using baking powder that has been open for a year. It loses strength, so a weighed 48 g of old powder raises like half the amount. Test it in hot water — it should fizz — and replace it if it does not.
- Confusing baking powder with baking soda. They are not interchangeable: baking powder contains its own acid, baking soda needs one added. A quarter cup of soda in place of powder would taste of soap.
- Scooping the cup through the bag or jar. Scooping packs the ingredient down and can add a fifth or more to the weight. Spoon it in lightly and level it off with a knife.
- Measuring over the mixing bowl. Levelling over the bowl drops the excess straight into the batter, so you have added ingredient you did not intend. Level over the bag or the sink.
Storage and handling
Airtight container, cool and dry, up to 6 months once opened. Keeping baking powder stored properly also keeps its weight per cup stable: an ingredient that has absorbed moisture from the air weighs more per cup than a dry one, so a sealed container is not just about freshness, it is about measurement accuracy too. If a bag or jar has been open for months in a humid kitchen, the first thing to do before a precise bake is to weigh the ingredient rather than trusting the cup. Label the container with the conversion — 1/4 cup is 48 g — and the next person to cook with it will thank you.
Frequently asked questions
How many grams is 1/4 cup of baking powder?
1/4 cup of baking powder weighs 48 g, measured spooned and levelled according to King Arthur Baking. That is one quarter of the full-cup weight of 192 g, and it is the figure to use when converting a recipe from cups to grams. All the figures on this page are approximate, so when a recipe really matters, verify with a kitchen scale.
How many tablespoons is 1/4 cup of baking powder?
There are 4 tablespoons in a quarter cup, whatever the ingredient. One tablespoon of baking powder weighs about 12 g, so 4 tablespoons come to about 48 g. For small amounts like this, a scale that reads to the gram is more reliable than spoons, because a heaped tablespoon can weigh half as much again as a level one.
How do I measure 1/4 cup of baking powder without a scale?
Baking Powder is measured spooned and levelled, according to King Arthur Baking. Spoon it into a 1/4-cup measure, level the top with the back of a knife, and you will be close to 48 g. That is the best you can do without a scale — but be honest with yourself that it is an estimate. A basic digital kitchen scale costs less than a bag of good flour and removes the guesswork from every recipe, not just this one.
What is baking powder used for?
Leavening cakes, pancakes and quick breads. Baking soda plus cream of tartar; double-acting, needs only moisture and heat. A quarter cup — 48 g — is a common amount in small batches, sauces, dressings and test bakes, which is why this conversion comes up so often.
How much baking powder is in a quarter cup?
About 48 g, which is roughly 12 teaspoons. A normal cake recipe uses 1 to 2 teaspoons, so a quarter cup is a bulk amount for a mix jar or a bakery batch. Always weigh it and check the recipe's unit first.
Can I make baking powder from baking soda?
Yes: mix 1 teaspoon of baking soda with 2 teaspoons of cream of tartar to replace 1 teaspoon of baking powder. For a quarter cup of baking powder, 48 g, you would need 4 teaspoons of baking soda and 8 teaspoons of cream of tartar — but it is simpler to buy baking powder, and the homemade mix does not keep.
Related conversions
Use the cups to grams converter recipe scaler for instant answers, or browse the cups to grams hub for the full ingredient list. Related pages: 1 cup of baking powder in grams, 1/2 cup of baking powder in grams, 1/4 cup of active dry yeast in grams. How many cups is 48 g of baking powder? Tablespoons of baking powder in grams See also our disclaimer about approximate conversions.