Lettuce, cos or romaine, raw
Per 100 g, Lettuce, cos or romaine, raw provides 17 calories, 3.2 g carbohydrate, 1.2 g protein and 1.8 g fibre.
= 20 kcal
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20kcal 1% RI Reference IntakeEU/UK adult daily energy reference of 2,000 kcal used on packaged-food nutrition labels (Reg. 1169/2011). Switch to the US toggle for FDA Daily Values.
98%Nutrient scoreNutrient ScoreThe share of this food's 21 rated nutrients that score well for its calories, a good source of beneficial nutrients while staying low in saturated fat, sodium and added sugars.21 available of 33 total nutrients with a Daily Value21of33
Protein1.2g24% kcal
Carbs3.2g64% kcal
Fat0.3g12% kcal
Fiber 1.8g
Full nutrient breakdown
Reference
Proximates
- Protein ProteinBuilds and repairs tissue, drives enzymes and hormones. Made up of amino acids, nine of which the body can't make itself.UK adult RI: 50 g/day1.24g1.24g2%
- Fat FatAll fats combined: saturated, monounsaturated, polyunsaturated, and trans. Carries fat-soluble vitamins (A, D, E, K) and contributes 9 kcal per gram.UK adult RI: 70 g/day0.26g0.26g0%
- Carbohydrate CarbohydrateAll carbohydrate combined: sugars, starches, and fiber. Calculated by subtracting water + protein + fat + ash from the food's total mass, hence "by difference".UK adult RI: 260 g/day3.24g3.24g1%
- Fiber FiberPlant carbohydrate the body can't digest. Feeds gut bacteria, slows sugar absorption, and supports regular digestion. UK adults: target 30 g/day.UK adult RI: 30 g/day1.80g1.80g6%
Carbohydrates
Protein and Amino Acids
Vitamins
- Vitamin C Vitamin CWater-soluble antioxidant + cofactor in collagen synthesis. Lost easily in cooking water and air exposure.UK adult RI: 80 mg/day4.60mg4.60mg6%
- Vitamin B1 (thiamin) Vitamin B1 (thiamin)Water-soluble B-vitamin for carbohydrate metabolism and nerve function. Whole grains, pork, and legumes are good sources.UK adult RI: 1.1 mg/day0.08mg0.08mg7%
- Vitamin B2 (riboflavin) Vitamin B2 (riboflavin)Water-soluble B-vitamin for energy production, cell growth, and skin health. Dairy, eggs, and lean meat are densest.UK adult RI: 1.4 mg/day0.07mg0.07mg5%
- Vitamin B3 (niacin) Vitamin B3 (niacin)Water-soluble B-vitamin for energy metabolism. The body can also make some niacin from the amino acid tryptophan.UK adult RI: 16 mg/day0.32mg0.32mg2%
- Vitamin B5 (pantothenic acid) Vitamin B5 (pantothenic acid)Water-soluble B-vitamin involved in coenzyme A, essential for energy metabolism and the synthesis of hormones, cholesterol, and red blood cells.UK adult RI: 6 mg/day0.14mg0.14mg2%
- Vitamin B6 Vitamin B6Water-soluble B-vitamin for amino acid metabolism and neurotransmitter synthesis.UK adult RI: 1.4 mg/day0.08mg0.08mg6%
- Folate FolateWater-soluble B-vitamin essential for DNA synthesis and cell division. Critical pre-conception and in early pregnancy to prevent neural tube defects.UK adult RI: 200 µg/day50.0µg50.0µg25%
- Vitamin A Vitamin AFat-soluble vitamin for vision, immune function, and skin. Measured in retinol activity equivalents (RAE) so plant and animal sources are comparable.UK adult RI: 800 µg/day436µg436µg55%
- Vitamin E Vitamin EFat-soluble antioxidant that protects cell membranes from oxidative damage. Nuts, seeds, and vegetable oils are the densest sources.UK adult RI: 12 mg/day0.14mg0.14mg1%
- Vitamin K Vitamin KFat-soluble vitamin essential for blood clotting and bone metabolism. Concentrated in dark leafy greens.UK adult RI: 75 µg/day102µg102µg136%
Minerals
- Calcium CalciumMajor mineral for bone density, muscle contraction, and nerve signalling.UK adult RI: 800 mg/day35.0mg35.0mg4%
- Iron IronCarries oxygen in haemoglobin. Plant (non-heme) iron absorbs less efficiently than meat (heme) iron, pair with vitamin C to boost absorption.UK adult RI: 14 mg/day0.95mg0.95mg7%
- Magnesium MagnesiumCofactor in 300+ enzyme reactions, energy metabolism, muscle relaxation, blood pressure regulation.UK adult RI: 375 mg/day13.7mg13.7mg4%
- Phosphorus PhosphorusMajor mineral for bones, energy storage (ATP), and cell membranes. Widespread in protein-rich foods.UK adult RI: 700 mg/day30.0mg30.0mg4%
- Potassium PotassiumElectrolyte mineral that counters sodium's effect on blood pressure. Concentrated in fruit, vegetables, beans, and dairy.UK adult RI: 2,000 mg/day253mg253mg13%
- Zinc ZincTrace mineral for immune function, wound healing, and sense of taste. Best absorbed from animal foods; phytates in grains reduce uptake.UK adult RI: 10 mg/day0.25mg0.25mg3%
- Copper CopperTrace mineral involved in iron metabolism and connective tissue.UK adult RI: 1 mg/day0.05mg0.05mg5%
- Manganese ManganeseTrace mineral for bone formation and antioxidant enzymes.UK adult RI: 2 mg/day0.13mg0.13mg6%
- Selenium SeleniumTrace mineral that supports thyroid hormone metabolism and antioxidant defence. Brazil nuts are the densest source.UK adult RI: 55 µg/day0.40µg0.40µg1%
Other
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Lettuce, cos or romaine, raw: key facts
Good source of
- How many calories are in Lettuce, cos or romaine, raw?
- Lettuce, cos or romaine, raw has 17 calories per 100 g.
- How much protein is in Lettuce, cos or romaine, raw?
- Lettuce, cos or romaine, raw provides 1.2 g of protein per 100 g.
- How many carbs are in Lettuce, cos or romaine, raw?
- Lettuce, cos or romaine, raw contains 3.2 g of carbohydrate per 100 g, including 1.8 g of fibre.
- How much fat is in Lettuce, cos or romaine, raw?
- Lettuce, cos or romaine, raw has 0.3 g of fat per 100 g.
Values shown for the selected serving and per 100 g. % RI follows the UK / EU Reference Intakes (Reg. 1169/2011) for adults and children 4 + years. Reference only, not medical or dietary advice (Terms & Conditions §3).