Vegetables
Romaine lettuce nutrition facts
A 1 undetermined cup shredded (47 g) serving of romaine lettuce provides 8 calories, 1 g protein, 2 g carbohydrate, and 0 g fat — about 24% of its calories from protein, 63% from carbohydrate, and 13% from fat. The interactive label below toggles between a serving and 100 g.
Calorie split
Vitamins & minerals
Per serving (47 g)
- Vitamin C
- 1.88 mg
- Vitamin A (RAE)
- 205 mcg
- Vitamin E
- 0.06 mg
- Vitamin K
- 48.2 mcg
- Thiamin (B1)
- 0.03 mg
- Riboflavin (B2)
- 0.03 mg
- Niacin (B3)
- 0.15 mg
- Vitamin B6
- 0.03 mg
- Folate (DFE)
- 63.9 mcg
- Magnesium
- 6.58 mg
- Phosphorus
- 14.1 mg
- Zinc
- 0.11 mg
- Copper
- 0.02 mg
- Manganese
- 0.07 mg
- Selenium
- 0.19 mcg
Nutrition highlights
Per 1 undetermined cup shredded (47 g), romaine lettuce is an excellent source of Vitamin K and Vitamin A and a good source of Folate.
% of the FDA Daily Value per 1 undetermined cup shredded (47 g) serving.
Key metrics
Nutrient density
Per 100 kcal, romaine lettuce delivers about 22% of a Daily Value on average across 22 beneficial nutrients. The score is its percentile for that measure among the 177 foods in our database — higher means more nutrition per calorie. How this is calculated.
- More vitamin A than 97% of foods · 90% of vegetables
Density counts protein, fiber, and vitamins and minerals (not fat, sodium, or sugar), each capped so a single nutrient can’t dominate, with a calorie floor so very-low-calorie foods aren’t overstated. It measures nutrition per calorie within our database — a useful guide, not a complete verdict on how “healthy” a food is.
Similar foods & swaps
The closest vegetables to romaine lettuce by nutrition (per 100 g), and how each differs.
Questions
- How many calories are in romaine lettuce?
- A 1 undetermined cup shredded (47 g) serving of romaine lettuce has about 8 calories. Per 100 g, it has 17 calories — a very low calorie density.
- How much protein is in romaine lettuce?
- Romaine lettuce provides about 1 g of protein per 1 undetermined cup shredded (47 g) serving.
- What are the macros in romaine lettuce?
- Per serving, romaine lettuce has roughly 1 g protein, 2 g carbohydrate, and 0 g fat. By calories, that is 24% protein, 63% carbohydrate, and 13% fat.
- Is romaine lettuce high in protein?
- Romaine lettuce has a protein density of about 7.2 g per 100 kcal, and 24% of its calories come from protein. Foods above roughly 10 g per 100 kcal are generally considered protein-dense.
- What vitamins and minerals are in romaine lettuce?
- Per 1 undetermined cup shredded (47 g), romaine lettuce is a notable source of Vitamin K, Vitamin A, and Folate. The label above lists the full micronutrient profile with % Daily Values.
Use it
More vegetables
References & methodology
- Data source: U.S. Department of Agriculture, Agricultural Research Service — FoodData Central, FDC ID 169247 (public domain).
- Daily Values: FDA Nutrition Facts label, 2016 update (adults and children aged 4+).
- Source claims: a serving supplying 10–19% of the Daily Value is a “good source”; 20% or more is an “excellent source” (FDA, 21 CFR 101.54).
- Calorie split: Atwater general factors — 4 kcal/g for protein and carbohydrate, 9 kcal/g for fat.
- Last reviewed: June 2026. Values are typical figures and vary with variety, ripeness, and preparation.
NutriFactsHub. “Romaine lettuce Nutrition Facts.” https://www.nutrifactshub.com/foods/romaine-lettuce