Potato Starch — Grams & Cups Converter
1 cup of potato starch weighs about 160 g. So 100 g ≈ 5/8 cup, 200 g ≈ 1 1/4 cups, and 300 g ≈ 1 7/8 cups. Convert any amount between grams, cups, ounces, tablespoons and millilitres with the calculator below.
💡 Tip: Potato starch thickens like cornstarch and tolerates higher heat, but don't boil it long or it thins out. Add near the end of cooking.
Cups to grams chart for potato starch
| Cups | Grams | Ounces |
|---|---|---|
| 1/4 | 40 | 1.41 |
| 1/3 | 53.3 | 1.88 |
| 1/2 | 80 | 2.82 |
| 2/3 | 107 | 3.76 |
| 3/4 | 120 | 4.23 |
| 1 | 160 | 5.64 |
| 1 1/2 | 240 | 8.47 |
| 2 | 320 | 11.3 |
| 3 | 480 | 16.9 |
Grams to cups chart for potato starch
| Grams | Cups | Ounces |
|---|---|---|
| 10 | 0 | 0.35 |
| 25 | 1/8 | 0.88 |
| 50 | 1/3 | 1.76 |
| 75 | 1/2 | 2.65 |
| 100 | 5/8 | 3.53 |
| 125 | 3/4 | 4.41 |
| 150 | 7/8 | 5.29 |
| 200 | 1 1/4 | 7.05 |
| 250 | 1 1/2 | 8.82 |
| 300 | 1 7/8 | 10.6 |
| 500 | 3 1/8 | 17.6 |
Spoon reference: 1 tablespoon ≈ 10 g, 1 teaspoon ≈ 3.33 g.
Potato starch vs potato flour
Potato starch is the pure, silky white starch extracted from potatoes — not to be confused with potato flour, which is the whole dried potato ground up and tastes distinctly of potato. It packs to about 160 g per cup and works much like cornstarch as a thickener, with the bonus of tolerating higher heat. Stir it into a little cold liquid first to make a slurry, then add it near the end of cooking; long boiling breaks it down and thins the sauce back out.
It's a staple in gluten-free flour blends and gives fried coatings a light, crisp shell.
Frequently asked questions
- How many grams is 1 cup of potato starch?
- 1 US cup of potato starch weighs about 160 grams (5.64 ounces).
- How many cups is 100g of potato starch?
- 100 grams of potato starch is about 5/8 cup.
- How many cups is 200g of potato starch?
- 200 grams of potato starch is about 1 1/4 cups.
- How many cups is 250g of potato starch?
- 250 grams of potato starch is about 1 1/2 cups.
- How many cups is 300g of potato starch?
- 300 grams of potato starch is about 1 7/8 cups.
- How many cups is 500g of potato starch?
- 500 grams of potato starch is about 3 1/8 cups.
- How many grams is ½ cup of potato starch?
- Half a US cup of potato starch is about 80 grams.
- How much does 1 cup of potato starch weigh?
- 1 cup of potato starch weighs about 160 grams, or roughly 5.64 ounces.
- How many grams in a tablespoon of potato starch?
- About 10 grams per tablespoon (and roughly 3.33 g per teaspoon).
- Why do my numbers differ slightly?
- Density changes with how the potato starch is packed, sifted or measured. For precise baking, weigh with a scale instead of using cups.
- How many grams is 2 cups of potato starch?
- About 320 g, at roughly 160 g per cup.
- How many cups is 150g of potato starch?
- About ⅞ cup.
- Is potato starch the same as potato flour?
- No. Potato starch is the extracted pure starch — light, white and nearly flavourless. Potato flour is the whole dried potato ground fine, and it's heavier with a strong potato taste. They aren't interchangeable.
- Can I substitute potato starch for cornstarch?
- Yes, roughly 1:1 for thickening. Potato starch handles higher heat but should be added near the end of cooking, since prolonged boiling thins it back out.
- What can I use instead of potato starch?
- Cornstarch, tapioca starch or arrowroot all work as 1:1 thickeners. For baking blends, tapioca starch is the closest match in texture.