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Vegetables

Romaine lettuce (cos lettuce)

Fresh vegetables 17 kcal / 100 g FSVO V7.1

100 g of Romaine lettuce (cos lettuce) provides 17 kcal (69 kJ). Its composition stands out for its content of folate (80 µg) per 100 g. This food belongs to the “Fresh vegetables” category (“Vegetables” family) of the Swiss database.

Romaine lettuce (cos lettuce)

The essentials for 100 g

Protein1.2 g 2%
Fat0.3 g 0%
Carbohydrates1.2 g 0%
Dietary fibre2.1 g 7%

% of nutrient reference values (adults), for the displayed portion.

Detailed composition

for 100 g
NutrientValue% NRV*
Macronutrients
Energy17 kcal (69 kJ)C1%
Protein1.2 gE2%
Fat0.3 gE0%
of which saturated fat0 gE0%
of which polyunsaturated0.2 gEn/a
of which omega-30 gCn/a
Carbohydrates1.2 gE0%
of which sugars1.2 gE1%
Dietary fibre2.1 gE7%
Water94.6 gEn/a
Alcohol0 gEn/a
Minerals
Calcium33 mgE4%
Iron0.5 mgE4%
Magnesium14 mgE4%
Phosphorus30 mgE4%
Potassium250 mgE13%
Sodium8 mgE0%
Zinc0.2 mgE2%
Vitamins
Vitamin D0 µgE0%
Vitamin B120 µgE0%
Vitamin C6 mgA6%
Folate80 µgA40%

* Share of the nutrient reference values for adults (Swiss FIC ordinance, annex 10), for the displayed portion. For dietary fibre the annex sets no value: the 30 g a day is an indicative benchmark. “n/a”: value not available in the source, never estimated by us. A, E or C indicates each value’s origin.

As a share of daily needs

Covered by 100 g · reference population: average adult.

Protein2%
Fat0%
Carbohydrates0%
Dietary fibre7%
Folate40%
Potassium13%
Vitamin C6%
Phosphorus4%
Calcium4%

Quick comparison

Difference per 100 g from this food’s point of view: “+” = it contains more than the compared food.

ComparisonProteinFatEnergy
vs Butterhead lettuce, raw− 0.1 g− 0.1 g+ 1 kcal
vs Sugar loaf chicory, raw± 0 g+ 0.1 g+ 1 kcal
vs Radish, red, raw+ 0.3 g+ 0.2 g+ 3 kcal
vs Leafy salad (average), raw− 0.1 g± 0 g± 0 kcal
vs Fennel, raw+ 0.2 g− 0.1 g− 6 kcal

Frequently asked questions

How many calories in 100 g of Romaine lettuce (cos lettuce)?
100 g of Romaine lettuce (cos lettuce) provides 17 kcal, i.e. 69 kJ (FSVO data V7.1).
How much protein in 100 g of Romaine lettuce (cos lettuce)?
100 g provides 1.2 g of protein, i.e. 2% of the adult reference value (50 g).
What is the fat content of 100 g of Romaine lettuce (cos lettuce)?
100 g contains 0.3 g of fat, of which 0 g saturated fatty acids.
Where do these values come from?
From the Swiss food composition database V7.1 published by the FSVO (July 2026). Every value carries an origin indicator: A (measured), E (estimated) or C (calculated).
Which preparation state do the values refer to?
To the official label “Romaine lettuce (cos lettuce)” in the database: the state (raw, cooked, drained…) is specified where relevant. Preparation substantially changes the composition per 100 g, especially the water content.

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