How many calories are in Lettuce, Romaine?

A 100 g serving of Lettuce, Romaine has 21 kcal. The calories in your portion depend on its weight and how it is prepared.

How much protein is in Lettuce, Romaine?

Per 100 g there are 1 g of protein — about 2% of the Daily Value (50 g).

How much fat and carbs are in Lettuce, Romaine?

Per 100 g there are 0.1 g of fat and 4.1 g of carbohydrate.

Vegetables

Lettuce, Romaine

USDA reference values for lettuce, romaine (per 100 g).

21kcalCalories

1gProtein

0.1gFat

4.1gCarbs

Protein, fat and carb balance

Share of calories from each macronutrient (per 100 g).

Protein 18.9%
Fat 3%
Carbs 78.1%

Full nutrition facts (per 100 g)

Nutrient	Per 100 g	% DV*
Macronutrients
Protein	1 g	2%
Total Fat	0.1 g	<1%
Saturated Fat	—
Carbohydrate	4.1 g	1%
Dietary Fiber	—
Total Sugars	—
Minerals
Sodium	23 mg	1%
Potassium	260.4 mg	6%
Calcium	27.6 mg	2%
Iron	0.3 mg	2%
Magnesium	12.1 mg	3%
Vitamins
Vitamin C	—
Vitamin A	—
Vitamin D	—
Other
Cholesterol	—

* Percent of the Daily Value (Daily Value, based on a 2,000 kcal diet).

Data source: USDA FoodData Central. Values are per 100 g of edible portion and are reference figures — they vary by variety, preparation and brand. Last updated: 2026-04-30.

Frequently asked questions

How many calories are in Lettuce, Romaine?: A 100 g serving of Lettuce, Romaine has 21 kcal. The calories in your portion depend on its weight and how it is prepared.
How much protein is in Lettuce, Romaine?: Per 100 g there are 1 g of protein — about 2% of the Daily Value (50 g).
How much fat and carbs are in Lettuce, Romaine?: Per 100 g there are 0.1 g of fat and 4.1 g of carbohydrate.

Similar foods and comparisons

Alfalfa Seeds, Sprouted 23 kcal 4 g protein Amaranth Leaves, Cooked 21 kcal 2.1 g protein Amaranth Leaves, Cooked 21 kcal 2.1 g protein Amaranth Leaves, Raw 23 kcal 2.5 g protein Arrowhead, Cooked 78 kcal 4.5 g protein Arrowhead, Cooked 78 kcal 4.5 g protein

Compare Lettuce, Romaine with: Alfalfa Seeds, Sprouted Amaranth Leaves, Cooked Amaranth Leaves, Cooked Amaranth Leaves, Raw

Note. This information is provided for general reference only and is not medical advice or a diet prescription. If you have a medical condition or special dietary needs, consult a physician or a registered dietitian.