How to measure potato starch
The chart entry is “Potato starch, 1 cup = 5 3/8 oz = 152 g”. Potato starch and potato flour are different products with different weights: the starch is 152 grams per cup, the flour 184 grams. Cornstarch and tapioca starch, the other thickeners here, are 112 and 113 grams per cup, so potato starch is the heaviest starch on the chart. Spoon it in loosely and level it. A tablespoon is 9.5 grams, a quarter cup 38 grams and half a cup 76 grams.
Sources: 152 grams per US cup is the weight per cup in King Arthur Baking’s ingredient weight chart (open the chart), entry “Potato starch, 1 cup = 5 3/8 oz = 152 g”. Cup and ounce sizes: NIST SP 811.
Potato starch: cups to grams chart
| Cups | Grams | Ounces |
|---|---|---|
| 1/8 cup | 19 g | 0.67 oz |
| 1/4 cup | 38 g | 1.34 oz |
| 1/3 cup | 51 g | 1.79 oz |
| 1/2 cup | 76 g | 2.68 oz |
| 2/3 cup | 101 g | 3.57 oz |
| 3/4 cup | 114 g | 4.02 oz |
| 1 cup | 152 g | 5.36 oz |
| 1 1/4 cups | 190 g | 6.7 oz |
| 1 1/2 cups | 228 g | 8.04 oz |
| 1 3/4 cups | 266 g | 9.38 oz |
| 2 cups | 304 g | 10.7 oz |
| 2 1/2 cups | 380 g | 13.4 oz |
| 3 cups | 456 g | 16.1 oz |
| 4 cups | 608 g | 21.4 oz |
Tablespoons and teaspoons of potato starch
A tablespoon of potato starch, leveled, weighs 9.5 g. A teaspoon of potato starch, a third of that, is 3.2 g, and 2 tablespoons are 19 g.
| Spoons | Grams |
|---|---|
| 1/4 tsp | 0.8 g |
| 1/2 tsp | 1.6 g |
| 1 tsp | 3.2 g |
| 1 tbsp | 9.5 g |
| 2 tbsp | 19 g |
| 3 tbsp | 29 g |
| 4 tbsp | 38 g |
Grams of potato starch to cups
Divide grams by 152 to get cups of potato starch. Per milliliter it weighs about 0.64 g, lighter than water by 85 g a cup.
| Grams | Cups | In the kitchen |
|---|---|---|
| 25 g | 0.16 cup | about 2.6 tbsp |
| 50 g | 0.33 cup | about 1/3 cup |
| 100 g | 0.66 cup | about 2/3 cup |
| 150 g | 0.99 cup | just under 1 cup |
| 200 g | 1.32 cups | just under 1 1/3 cups |
| 250 g | 1.64 cups | just over 1 5/8 cups |
| 300 g | 1.97 cups | just under 2 cups |
| 400 g | 2.63 cups | about 2 5/8 cups |
| 500 g | 3.29 cups | just over 3 1/4 cups |
| 1,000 g | 6.58 cups | just under 6 5/8 cups |
Ounces and pounds of potato starch to cups
Potato starch by the pound: 2.98 cups, just under 3 cups per pound, 0.75 cups per 4 ounces.
| Weight (not fluid oz) | Grams | Cups | In the kitchen |
|---|---|---|---|
| 4 oz | 113 g | 0.75 cups | about 3/4 cup |
| 8 oz | 227 g | 1.49 cups | about 1 1/2 cups |
| 12 oz | 340 g | 2.24 cups | just under 2 1/4 cups |
| 1 lb | 454 g | 2.98 cups | just under 3 cups |
| 2 lb | 907 g | 5.97 cups | just under 6 cups |
| 5 lb | 2,268 g | 14.92 cups | just over 14 7/8 cups |
Other flours closest in weight
If you use potato starch in place of potato flour, weigh it. A cup of potato flour weighs 184 g; the same weight of potato starch is 1.21 cups, just under 1 1/4 cups. Measured cup for cup, potato starch gives 32 g less, 17 percent.
Potato starch ranks 5th heaviest per cup among 36 flours and starches here. Against all 193 ingredients: 95 heavier, 97 lighter.
- Polenta (coarse cornmeal): 163 grams per cup, 11 g more
- Semolina flour: 163 grams per cup, 11 g more
- Cornmeal (yellow, degermed): 157 grams per cup, 5 g more
- Vital wheat gluten: 144 grams per cup, 8 g less
- White rice flour: 142 grams per cup, 10 g less
- Cornmeal (whole grain): 138 grams per cup, 14 g less
For every ingredient in one place, open the cups to grams converter. The pizza dough calculator works in grams from the start, which suits flour well, and the recipe scaler resizes a whole recipe before you convert it.
Frequently asked questions
How many grams is 1/2 cup of potato starch?
About 76 grams. A full cup is about 152 grams and 1/4 cup about 38 grams.
How many cups is 100 grams of potato starch?
0.66 cups, about 2/3 cup: 100 divided by 152.
How many grams is a tablespoon of potato starch?
About 9.5 grams, since a cup is 152 grams and holds 16 tablespoons. Two tablespoons are 19 grams.
Can I use the cornstarch weight for potato starch?
No. King Arthur Baking’s chart gives 152 grams per cup for potato starch and 112 grams per cup for cornstarch (28 grams per quarter cup). A tablespoon of potato starch is 9.5 grams against 7 grams for cornstarch.
How many cups of potato starch are in a pound?
2.98 cups, just under 3 cups. A pound is 453.6 g and each cup of potato starch weighs 152 g. Five pounds, 2,268 g, is about 14.9 cups.
Does a cup of potato starch weigh 8 ounces?
A cup of potato starch weighs 5.36 oz, or 152 g. The 8 ounces in “a cup is 8 ounces” are fluid ounces, a volume. Eight weight ounces of potato starch fill 1.49 cups, about 1 1/2 cups.