Other ingredients
Cornstarch: gram to US cup
1 gram of Cornstarch = 0 US cup — based on a density of 0.54 g/ml.
| gram | US cup |
|---|---|
| 5 | 0 |
| 10 | ⅛ |
| 25 | ¼ |
| 50 | ⅓ |
| 75 | ⅔ |
| 100 | ¾ |
| 125 | 1 |
| 150 | 1⅛ |
| 200 | 1⅔ |
| 250 | 2 |
| 500 | 3⅞ |
| 1,000 | 7⅞ |
Why the ingredient matters
A cup is a volume, not a weight. Cornstarch has a density of 0.54 g/ml — different ingredients give different weights for the same cup. That's why generic « cup to gram » charts are wrong by 10–30 %.
How precise is this?
The density used here is sourced and cross-checked. Real-world measures still vary by about ±8% depending on how the cup is filled — sifted, scooped or packed.
Data sources
- USDA FoodData Central — Public domain (US government work)
- King Arthur Baking — Ingredient Weight Chart — Reference chart (published factual values)
Frequently asked questions
How many US cup is 1 gram of Cornstarch?
1 gram of Cornstarch equals about 0 US cup, using a density of 0.54 g/ml.
Is a US cup the same as a metric cup?
No — a US cup is 236.6 ml, a metric cup 250 ml, an imperial cup 284 ml. This page uses the US cup; the converter lets you switch conventions.
Why do different sites give different answers?
Most charts use one generic density for every ingredient. We use the measured density of Cornstarch itself — that is the physically correct conversion.
Should I weigh ingredients instead of using cups?
Yes, whenever possible — a scale removes fill-density error entirely, especially for flour and powders.