1 Cup Tapioca Flour in Grams
1 cup of tapioca flour weighs 128 g (spooned and levelled, USDA). Starch from cassava root; gives a chewy, glossy finish. All the figures on this page are approximate conversions based on the USDA value, so when a recipe really matters, verify with a kitchen scale.
Tapioca flour, also called tapioca starch, is the fine white starch extracted from cassava root, and it is one of the most useful thickeners and gluten-free ingredients in the pantry. A cup weighs 128 g, and it gives a glossy, slightly chewy finish that cornstarch cannot match, which is why pie makers use it for fruit fillings and Brazilian bakers use it for cheese bread. It thickens at a lower temperature than flour, it stays clear rather than cloudy, and it freezes and reheats better than most starches. Its one weakness is that it breaks down if it is boiled hard for a long time, so it suits gentle cooking and baking better than a long rolling boil.
Why weighing tapioca flour beats measuring it in cups
Flour is the ingredient where cup measurements fail most often, and the reason is packing. The same cup of flour can weigh anywhere from 120 g to 142 g depending on whether you scoop it straight from the bag or spoon it in lightly, and that 20 g swing is the difference between a tender cake and a dry one. In bread the error is more forgiving, because dough can be adjusted by feel, but in cakes, pastry and cookies there is no second chance once the batter is mixed. Weighing flour is the single highest-value habit a home baker can adopt, and it costs nothing more than a basic kitchen scale. It also makes recipes repeatable: the same numbers give the same loaf, the same crumb and the same rise every time you bake it.
Tapioca Flour cups to grams conversion table
| Cups | Grams | Tablespoons |
|---|---|---|
| 1/4 cup | 32 g | 4 |
| 1/3 cup | 42.7 g | 5.3 |
| 1/2 cup | 64 g | 8 |
| 2/3 cup | 85.3 g | 10.7 |
| 3/4 cup | 96 g | 12 |
| 1 cup | 128 g | 16 |
| 1 1/2 cups | 192 g | 24 |
| 2 cups | 256 g | 32 |
| 3 cups | 384 g | 48 |
| 4 cups | 512 g | 64 |
One tablespoon of tapioca flour weighs about 8 g, and a cup is 16 tablespoons, so the tablespoon column is simply the cup weight divided by 16. 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. All the values in this table are approximate, and they assume the ingredient is measured spooned and levelled, exactly as the source measured it.
How the weight was measured
The figure on this page comes from USDA, measured spooned and levelled unless the method line says otherwise. Spooning means filling the cup with a spoon rather than plunging the cup into the bag, and levelling means sweeping a knife across the rim. Scooping packs the ingredient down and can add a fifth or more to the weight, which is why two bakers following the same cup-based recipe can get visibly different results. Confidence in this value is medium. That reflects how consistent the ingredient is from brand to brand: a uniform, factory-packed ingredient is more predictable than a fresh, variable one. Even a high-confidence figure is still an approximation, because moisture, grind size and settling all shift the weight a little. Treat the grams on this page as a reliable starting point and check with a scale when the recipe is fussy, expensive, or being made for the first time.
Worked examples
Brazilian cheese bread, pao de queijo
Pao de queijo is the most famous use for tapioca flour, and a batch that calls for 2 cups needs 256 g, mixed with hot milk, oil and cheese into a sticky dough. The dough is rolled into small balls and baked until puffed and golden, and the tapioca starch is what gives them their chewy, stretchy interior. Weigh 256 g rather than scooping, because the fine starch packs easily and an extra 20 g makes the bread dense instead of airy.
Thickening a fruit pie
A fruit pie filling that calls for 1/4 cup of tapioca flour needs 32 g, tossed with the fruit and sugar before filling the crust. The starch thickens the juices as the pie bakes, and it does so without clouding them, so the filling stays bright and glossy. Unlike flour, tapioca flour does not need to be cooked for a long time to lose its raw taste, and it does not make the filling pasty, which is why it is the thickener of choice for cherry and berry pies.
A gluten-free flour blend
Tapioca flour is a common part of homemade gluten-free flour blends, where it adds chew and helps the crumb hold together. A blend that uses 1 cup of tapioca flour needs 128 g, mixed with rice flour, potato starch and a binder. On its own it is too starchy to replace wheat flour, but as a third of a blend it gives the finished bake a tenderness and a slight stretch that rice flour alone cannot provide.
When this conversion matters most
This conversion matters most in baking, where flour provides the structure of the finished product. Cakes, pastry, cookies and enriched breads all depend on the ratio of flour to liquid, fat and sugar, and a 10 percent error in flour throws that ratio off. It matters less in recipes where flour is a thickener or a coating, such as a roux or a dusting for fried food, because small differences disappear into the cooking. It matters again when you scale a recipe up or down: doubling a scooped cup doubles the error, while doubling a weighed amount stays exact. If you bake the same recipe more than once, weighing is what makes the second batch taste like the first.
Common mistakes
The most common mistake is scooping the cup directly through the bag. That packs the flour down and can add 20 g or more per cup, which is enough to turn a soft dough stiff or a moist cake dry. The second mistake is using a liquid measuring jug for flour. Jugs are read at eye level and cannot be levelled with a knife, so the amount is a guess dressed up as a measurement. The third is tapping or shaking the cup to settle the flour, which packs it further. And the fourth is forgetting that different flours weigh different amounts per cup: a cup of one flour is not interchangeable with a cup of another, even when the recipe says one cup of either. Always convert by weight for the flour you are actually using.
What to do if you do not have a scale
If you do not have a scale, spoon the flour into the cup until it is heaped, then sweep a straight knife across the top to level it off. Never scoop, never tap, and never press the flour down. That spooned-and-levelled method is exactly how the figure on this page was measured, so it is the closest you can get without weighing. It will still vary by a few grams from cup to cup, because flour settles and humidity changes its weight, but it is far closer than scooping. For recipes where flour is the main structure, such as sponge cakes and pastry, a scale that reads to the gram is worth buying before any other piece of baking equipment.
Storing tapioca flour
Airtight container, cool and dry, up to 1 year. Keeping tapioca flour properly stored matters for the conversion as well as for the flavour: an ingredient that has absorbed moisture from the air weighs more per cup than a dry one, and one that has dried out weighs less. Store it in an airtight container, away from heat and light, and measure it in the state the recipe expects, not straight from a damp or stale bag.
Frequently asked questions
Is tapioca flour the same as tapioca starch?
Yes. The two names describe the same product: the fine white starch extracted from cassava root. Packaging varies by brand and by country, with some calling it flour and some calling it starch, but the ingredient and the weight are the same. It is not the same as tapioca pearls, which are the small beads used in bubble tea and puddings, and those cannot be swapped in directly.
Can tapioca flour replace cornstarch?
In many recipes, yes, and it has some advantages: it thickens at a lower temperature, it stays glossy and clear rather than going cloudy, and it holds up better to freezing. It is less stable under prolonged high heat, so for a sauce that will be boiled hard for a long time, cornstarch is the safer choice. For pie fillings, glazes and gluten-free baking, tapioca flour is usually the better thickener.
Can I use cups instead of a scale for tapioca flour?
Yes, but a scale is more accurate. If you measure tapioca flour spooned and levelled, exactly as the figure on this page was measured, a cup will be close to 128 g, within a few grams. The problem is that most people scoop rather than spoon, which can add 15 to 25 percent to the weight, and that error is enough to change a bake. For everyday cooking, cups are fine. For baking, where the ratio of ingredients decides the result, weigh it and check the number on the scale.
How many tablespoons are in a cup of tapioca flour?
There are 16 tablespoons in a US cup, so a cup of tapioca flour is 16 tablespoons, and one tablespoon weighs about 8 g. A teaspoon weighs about 2.7 g. Tablespoons are useful when a recipe calls for a small amount, but they carry the same packing problem as cups: a heaped tablespoon can weigh half as much again as a level one, so level every spoon with the back of a knife, and use a scale for small amounts when accuracy matters.
Does the weight change if I pack or sift tapioca flour?
Yes, and this is the single biggest source of error in cup measurements. tapioca flour is measured spooned and levelled, and a scooped cup can weigh 15 to 25 percent more than a spooned cup, because scooping packs the ingredient down. Sifting has the opposite effect: it adds air and makes the cup lighter. Always measure the way the figure on this page was measured, spooned and levelled, and the weight will match the table.