How many grams are in 1 cup of Cornmeal?
One US cup (240 ml) of whole-grain yellow cornmeal weighs about 138 grams. A US customary cup (236.6 ml) holds about 136 g, a metric cup (250 ml) about 144 g, and an imperial cup (284.1 ml) about 163 g.
Cups of Cornmeal to grams
One US cup (240 ml) of whole-grain yellow cornmeal weighs about 138 grams (4.9 oz), measured spoon and level.
Cornmeal’s weight per cup depends mostly on its grind: whole-grain yellow cornmeal is 138 g per US cup, while degermed supermarket cornmeal runs heavier and coarse polenta heavier still.
Ingredient
138 grams
US cup · whole-grain yellow cornmeal · spoon and level
More precise value: 138 grams
- Cup standard
- US cup · 240 ml
- Ingredient
- whole-grain yellow cornmeal
- Method
- spoon and level
- Density
- 0.575 g/ml
- Sources
- King Arthur · USDA FDC
- Reviewed
- 2026-08
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Cornmeal by cup standard
The same volume weighs more in a larger cup. These figures scale the reference weight of 138 g per 240 ml US cup by each cup standard’s exact volume.
| Cups | US cup | US customary cup | Metric cup | Imperial cup |
|---|---|---|---|---|
| ⅛ | 17 g | 17 g | 18 g | 20 g |
| ¼ | 35 g | 34 g | 36 g | 41 g |
| ⅓ | 46 g | 45 g | 48 g | 54 g |
| ½ | 69 g | 68 g | 72 g | 82 g |
| ⅔ | 92 g | 91 g | 96 g | 109 g |
| ¾ | 104 g | 102 g | 108 g | 123 g |
| 1 | 138 g | 136 g | 144 g | 163 g |
| 1½ | 207 g | 204 g | 216 g | 245 g |
| 2 | 276 g | 272 g | 288 g | 327 g |
whole-grain yellow cornmeal, spoon and level. Reviewed 2026-08.
Tablespoons and teaspoons
Spoon measures use the US definitions: 1 tablespoon = 14.79 ml (16 per cup) and 1 teaspoon = 4.93 ml (3 per tablespoon).
| Measure | Grams (g) | Ounces (oz) |
|---|---|---|
| 1 tsp | 2.8 | 0.1 |
| 1 tbsp | 8.5 | 0.3 |
| 2 tbsp | 17 | 0.6 |
| 4 tbsp (¼ cup) | 34 | 1.2 |
| 8 tbsp (½ cup) | 68 | 2.4 |
| 16 tbsp (1 cup) | 136 | 4.8 |
How to measure Cornmeal by volume
- Spoon into the cup and level; cornmeal does not need packing.
- Check the label — “whole-grain”, “degermed” and “polenta” all weigh differently per cup.
Why the weight varies
Grind matters: whole-grain cornmeal is lighter per cup than degermed cornmeal, and coarse polenta weighs more still.
Cornbread and polenta both hinge on the meal-to-liquid ratio, and grind size changes both the weight and how much liquid the meal drinks. Matching the recipe’s grind matters as much as the gram figure.
Which value we publish, and why
We publish 138 g per US cup of whole-grain yellow cornmeal (King Arthur); USDA lists 122 g whole-grain and 157 g degermed.
Values you may see elsewhere
Sources: King Arthur · USDA FDC . Reference weight verified against King Arthur, USDA FDC. Reviewed 2026-08. Conversions are estimates — ingredient weight varies with packing and brand.
Frequently asked questions
How many grams is 1 tablespoon of Cornmeal?
One US tablespoon (14.79 ml) of whole-grain yellow cornmeal weighs about 8.5 g, and one teaspoon (4.93 ml) about 2.8 g.
How many ounces is 1 cup of Cornmeal?
One US cup of whole-grain yellow cornmeal weighs about 4.9 oz (138 g). Note these are weight ounces — for liquids, don’t confuse them with fluid ounces, which measure volume.