1/4 Cup Cake Flour in Grams
1/4 cup of cake flour weighs 30 g (spooned and levelled, King Arthur Baking). Very finely milled, low-protein flour that gives cakes a tender, fine crumb. All the figures on this page are approximate conversions based on the King Arthur Baking value of 120 g per cup, so when a recipe really matters, verify with a kitchen scale.
Why a quarter cup is worth weighing
A quarter cup is a small measure, and small measures are where cup errors hurt most. A 5 g mistake in a full cup of cake flour is a rounding error; the same 5 g on a quarter cup is a 17 percent swing on 30 g, and in a small batch that swing can change the result. Recipes that call for a quarter cup are usually small, precise or both — a mug cake, a glaze, a roux, a single-serve bake — and there is no large batch to absorb the error. Weighing 30 g takes five seconds and removes the problem entirely.
Spooned and levelled is the method behind the number, and it matters. Cake Flour is used for sponge cakes, chiffon and delicate layer cakes. 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: 30 g of cake flour is 30 g whatever the brand, the humidity or the size of your measuring cup.
Cake Flour cups to grams conversion table
| Cups | Grams | Tablespoons |
|---|---|---|
| 1/4 cup | 30 g | 4 |
| 1/3 cup | 40 g | 5.3 |
| 1/2 cup | 60 g | 8 |
| 2/3 cup | 80 g | 10.7 |
| 3/4 cup | 90 g | 12 |
| 1 cup | 120 g | 16 |
| 1 1/2 cups | 180 g | 24 |
| 2 cups | 240 g | 32 |
The tablespoon column shows how many tablespoons each amount equals: a quarter cup is 4 tablespoons, and one tablespoon of cake flour weighs about 7.5 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 other row is a multiple of 30 g, 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 cake flour, that gives 120 g per cup, and a quarter of that is 30 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.
A note on disputed figures. King Arthur lists 120 g per cup; finely milled cake flour is sometimes quoted at 100 g per cup when sifted, so spoon and level rather than scooping. That is why this page uses the King Arthur Baking value of 120 g per cup as its single, stated source, rather than averaging across charts. An average of two different measuring methods is a number that matches nobody's cup, so we pick one method, name it, and stick to it.
Worked examples
A roux for a cheese sauce
A cheese sauce for two starts with a roux of 1/4 cup of cake flour — 30 g — melted with an equal amount of butter. Cook the roux for a minute until it smells nutty, then whisk in the milk a splash at a time. If the roux is too thick, the sauce turns gluey; too thin, and it never coats the pasta. Weighing 30 g is the simplest way to keep the ratio right, because a cup of flour measured by eye can vary by 20 g or more.
A small batch of scones
A half-batch of scones for a quiet afternoon uses around 1/4 cup of cake flour per scone's share of the dough, and the total for four small scones is often close to a cup. But when you are testing a new flour, making a trial batch with 1/4 cup — 30 g — tells you how the flour behaves before you commit a full bag. Cake Flour is very finely milled, low-protein flour that gives cakes a tender, fine crumb, and that character shows up in the crumb even at this scale.
Dusting a cake tin
Dusting a greased cake tin takes roughly 1/4 cup of cake flour, or 30 g, tapped around the inside until every surface is coated. The point is a thin, even layer, and weighing the flour first stops you from tipping half the bag into the tin and then having to shake most of it back out. Tap the tin over the sink, and the excess — usually a few grams — falls away, leaving the thin coating that stops a sponge from sticking.
Spoon, level, never scoop
The single biggest error in flour measurement is scooping the cup straight from the bag. A scooped cup of cake flour can weigh 20 g more than a spooned and levelled one, and at quarter-cup scale that error is 5 g on 30 g — a 17 percent swing. Spoon the flour into the cup, level it with the back of a knife, and the number on this page matches what is in your bowl. If you own a scale, skip the cup entirely and weigh 30 g directly.
Scaling a quarter cup up and down
Once you know that 1/4 cup of cake flour is 30 g, the rest is arithmetic. Half a cup is 60 g, three quarters is 90 g, and a full cup is 120 g. Doubling a recipe that calls for 1/4 cup means weighing 60 g; halving it means 15 g, which is 2 tablespoons. Writing the recipe in grams at this point is worth doing: the next time you make it, you weigh 30 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 cake flour
- Scooping the cup from the bag. Scooping packs the flour down and can add 20 g per cup — 5 g on a quarter cup. Always spoon and level, or weigh 30 g.
- Measuring over the mixing bowl. Levelling over the bowl drops the excess straight into the batter, so you have added flour you did not intend. Level over the bag or the sink.
- Using a liquid jug for flour. A jug measures volume at eye level and has no straight edge to level against, so flour measured in a jug is a guess. Use a dry cup or a scale.
- Sifting after measuring. Sifting changes the volume, not the weight. If a recipe says sifted flour, measure 30 g first, then sift it — never the other way round.
Storage and handling
Airtight container, cool and dry, up to 1 year. Keeping cake flour 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 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 30 g — and the next person to bake with it will thank you.
Frequently asked questions
How many grams is 1/4 cup of cake flour?
1/4 cup of cake flour weighs 30 g, measured spooned and levelled according to King Arthur Baking. That is one quarter of the full-cup weight of 120 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 do I measure 1/4 cup of cake flour without a scale?
Cake Flour is measured spooned and levelled, according to King Arthur Baking. Spooned and levelled it into a 1/4-cup measure, level the top with the back of a knife, and you will be close to 30 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.
Can I use the same conversion for a different brand of cake flour?
Yes, as a starting point. The 30 g figure is a standard average for cake flour, and most brands sit within a few grams of it. If you bake with one brand all the time, weigh a quarter cup of it once and note the number on the bag, and you will have a conversion tuned to your own kitchen.
What is cake flour used for?
Sponge cakes, chiffon and delicate layer cakes. Very finely milled, low-protein flour that gives cakes a tender, fine crumb. A quarter cup — 30 g — is a common amount in small batches, glazes, sauces and test bakes, which is why this conversion comes up so often.
How should I store cake flour?
Airtight container, cool and dry, up to 1 year. Good storage keeps the ingredient fresh and keeps its weight per cup consistent, because moisture absorbed from the air adds grams that the recipe did not ask for.
Why do different charts give different weights for cake flour?
King Arthur lists 120 g per cup; finely milled cake flour is sometimes quoted at 100 g per cup when sifted, so spoon and level rather than scooping. We use the King Arthur Baking figure of 120 g per cup, measured spooned and levelled, so a quarter cup is 30 g. If a recipe you trust uses a different figure, follow that recipe's chart for that recipe — but do not mix charts inside one recipe.
Related conversions
Use the cups to grams converter flour substitute converter recipe scaler for instant answers, or browse the cups to grams hub for the full ingredient list. Related pages: 1 cup of cake flour in grams, 1/2 cup of cake flour in grams, 120 g of cake flour in cups, tablespoons of cake flour in grams, 1/4 cup of all-purpose flour in grams, 1/4 cup of bread flour in grams. See also our disclaimer about approximate conversions.