Potato starch: Cups to Grams
One US cup of potato starch is about 152 g (flour & dry); a tablespoon is about 9.5 g and 100 g is about 0.658 cups. Convert any amount below.
Source basis: King Arthur Baking lists 1 US cup of potato starch at 152 g. Source checked 14 August 2026; cup-to-weight results remain approximate because packing and product density vary.
Weight uses potato starch's real density. Volume↔volume and weight↔weight are exact for any ingredient; cup→gram uses a cited reference weight (packing and cup size vary by ±5%).
Note: Potato starch and potato flour are separate products with different reference weights.
Product form: This page uses potato starch. A differently cut, packed, drained, cooked, or otherwise prepared form can have a different cup weight.
Potato starch — volume to weight
Common cup and spoon amounts of potato starch, converted to grams, ounces and millilitres.
| Amount | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 tsp | 3.17 g | 0.112 oz | 4.93 ml |
| 1 tbsp | 9.5 g | 0.335 oz | 14.8 ml |
| ¼ cup | 38 g | 1.34 oz | 59.1 ml |
| ⅓ cup | 50.7 g | 1.79 oz | 78.9 ml |
| ½ cup | 76 g | 2.68 oz | 118 ml |
| ⅔ cup | 101 g | 3.57 oz | 158 ml |
| ¾ cup | 114 g | 4.02 oz | 177 ml |
| 1 cup | 152 g | 5.36 oz | 237 ml |
| 2 cups | 304 g | 10.7 oz | 473 ml |
Potato starch — weight to cups
Weigh potato starch on a scale? Here is what each weight is in cups and tablespoons.
| Grams | Cups | Tablespoons | Ounces |
|---|---|---|---|
| 10 g | 0.066 | 1.05 | 0.353 oz |
| 25 g | 0.164 | 2.63 | 0.882 oz |
| 50 g | 0.329 | 5.26 | 1.76 oz |
| 100 g | 0.658 | 10.5 | 3.53 oz |
| 150 g | 0.987 | 15.8 | 5.29 oz |
| 200 g | 1.32 | 21.1 | 7.05 oz |
| 250 g | 1.64 | 26.3 | 8.82 oz |
| 500 g | 3.29 | 52.6 | 17.6 oz |
| 1000 g | 6.58 | 105 | 35.3 oz |
Why weigh potato starch instead of measuring cups?
A cup measures volume, but recipes really care about how much potato starch you add by weight. One US cup of potato starch is taken as 152 g here, cited from King Arthur Baking for the exact chart form “potato starch”, and every conversion on this page routes through that figure. Volume-to-volume and weight-to-weight steps are exact, but the cup→gram crossing depends on product form and how the potato starch is packed, so a kitchen scale is the reliable way to hit the same result every time.
FAQ
How many grams are in a cup of potato starch?
One US cup of potato starch weighs about 152 g (source: King Arthur Baking; chart entry: 1 US cup of potato starch). Potato starch and potato flour are separate products with different reference weights.
How many grams are in a tablespoon of potato starch?
One tablespoon of potato starch is about 9.5 g, and one teaspoon about 3.17 g, since a US cup is exactly 16 tablespoons (48 teaspoons).
How much is 100 g of potato starch in cups?
100 g of potato starch is about 0.658 cups. Use the converter above for any other weight — it works in both directions.
Is the cup-to-gram figure for potato starch exact?
The cup weight is a cited reference (King Arthur Baking); volume↔volume and weight↔weight conversions on this page are exact, but the cup→gram step depends on packing, humidity and brand, so it is best treated as ±5%. A kitchen scale removes the guesswork.
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