Protein content
A 1 cup chopped serving of iceberg lettuce contains 0.5 g of protein - only a minor source of protein, about 1% of the 50 g Daily Value.
Share of this food's calories that come from protein - it is moderately protein-dense.
| Serving | 1 cup chopped (57 g) |
|---|---|
| Protein per serving | 0.5 g |
| Protein per 100 g | 0.9 g |
| Calories per serving | 8 kcal |
| Protein density | 26% of calories |
| Share of 50 g Daily Value | 1% |
| Protein quality | Incomplete protein |
| Category | Vegetables |
| Food type | Whole food |
| USDA record | FoodData Central #169248 |
A typical 1 cup chopped serving of iceberg lettuce contains 0.5 grams of protein (0.9 g per 100 g), which makes it only a minor source of protein. That covers roughly 1% of the 50 g reference Daily Value, so it adds toward your protein total for the day.
Around 26% of the calories in iceberg lettuce come from protein, so it is moderately protein-dense. It contributes to a day's protein total, but the bulk of what it delivers is energy rather than amino acids - treat it as a contributor alongside a denser source, not as the protein in a meal.
Among the 105 vegetables in the database, iceberg lettuce ranks 96th by protein per serving, and 774th out of all 796 foods on the site. Set against red cabbage, another vegetable entry in the database, a serving carries about 0.5 g less protein (red cabbage has 1 g per 1 cup shredded raw).
It is an incomplete protein on its own; pairing it with other plant foods across the day covers the full range of essential amino acids. The serving above is measured by volume at 57 g. The per-100 g figure lets you compare it directly against any other food here, whatever its serving.
Source: USDA FoodData Central #169248 - "Lettuce, iceberg (includes crisphead types), raw" (SR Legacy, published 4/1/2019). Values are the published reference figures for that record, not lab measurements for a specific brand or batch.
Quick answers
Iceberg lettuce has 0.9 g of protein per 100 g. A typical 1 cup chopped serving (57 g) provides 0.5 g.
No. Iceberg lettuce is an incomplete protein on its own; pairing it with other protein sources across the day covers the full range of essential amino acids.
A 1 cup chopped serving of iceberg lettuce contains 0.5 g of protein, about 1% of the 50 g reference Daily Value.
Iceberg lettuce is only a minor source of protein, and about 26% of its calories come from protein, which makes it moderately protein-dense. Set against red cabbage, another vegetable entry in the database, a serving carries about 0.5 g less protein (red cabbage has 1 g per 1 cup shredded raw).
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