How Many Calories Are In Lettuce? | The Crunchy Facts

Most people assume lettuce is nutritionally empty — just crunchy water with leaves shaped like a bowl for heavier toppings. That reputation has some truth, but it’s also incomplete.

The honest answer about how many calories are in lettuce is simple and surprisingly uniform across varieties. A standard one-cup serving of shredded or chopped lettuce lands between 5 and 10 calories. What varies more than the calorie count is what else you get — and what you don’t.

Calorie Breakdown By The Numbers

Per the USDA nutrition database, 100 grams of raw lettuce provides about 15 calories. Since most people eat lettuce in cup measures, the more practical figure is 8 to 10 calories per cup depending on how finely you chop and how tightly you pack it.

Iceberg, the most-common grocery store lettuce, runs 10 calories per cup of shredded leaves (72 grams). That same serving delivers 0.6 grams of protein, 2.1 grams of carbohydrates, 0.1 grams of fat, and 0.9 grams of fiber. About 71% of those calories come from carbs, 24% from protein, and a negligible 6% from fat.

A lighter, loosely packed cup can drop as low as 5.4 calories. The takeaway is that no matter which variety you grab, the calorie difference between types rarely exceeds 5 calories per serving.

Why The Low Calorie Count Actually Matters

When people search for lettuce calories, they’re almost always thinking about volume eating — fitting more food into a daily calorie budget without blowing it. Lettuce is useful here because its water-to-fiber ratio creates bulk without energy density.

• Volume eating value: A full salad bowl with 3 cups of lettuce adds roughly 20 to 30 calories. Compare that to 3 cups of rice at roughly 600 calories, and the difference in satiety per calorie becomes obvious.
• Hydration contribution: Lettuce is about 95% water by weight. Eating a few cups contributes to daily fluid intake, though it shouldn’t replace drinking water.
• Fiber foundation: One cup of iceberg offers roughly 1 gram of fiber. That’s modest, but red leaf lettuce pushes slightly higher at about 1.2 grams per cup — a small boost worth noting if you’re choosing between types.
• Vitamin A punch: A single cup of chopped lettuce covers nearly your entire daily vitamin A requirement. This is where the “empty calories” reputation falls short; even iceberg delivers meaningful vitamin A.
• Folate content: Iceberg lettuce contains more folate per serving than arugula, red leaf, green leaf, chard, and kale — a counterintuitive win for the variety often dismissed as nutritionally weak.

Calories By Lettuce Variety

Not all lettuce is identical, and the differences matter more for nutrients than for calories. All common types share zero fat and zero cholesterol, as Cleveland Clinic notes in its lettuce fat and cholesterol overview, but darker leaves pull ahead in overall nutrient density.

Lettuce Type	Calories Per Cup	Fiber Per Cup
Iceberg (shredded)	10	0.9 g
Romaine (chopped)	8	1.0 g
Red Leaf	8	1.2 g
Green Leaf	8	1.0 g
Butterhead (Bibb/Boston)	7	0.9 g

The calorie spread between the highest and lowest varieties is just 3 calories per cup. If you’re choosing lettuce for calorie control alone, any variety works. If you’re optimizing for nutrients, darker leaves consistently deliver more.

Beyond Calories: What Else Lettuce Provides

Low-calorie foods can still contribute meaningful nutrition, and lettuce fits that description. Its nutrient profile goes beyond just vitamin A and folate.

1. Vitamin C: Three cups of iceberg provide about 4% of the Daily Value for vitamin C. Modest, but not zero — especially if you’re layering other vegetables on top.
2. Iron and manganese: Crisphead (iceberg) provides about 2% of the DV for iron and 5.4% of the DV for manganese per serving, per nutrition databases. These amounts are small but additive across a varied diet.
3. Low FODMAP status: All common varieties — iceberg, romaine, butter, and red leaf — are naturally low in fermentable carbohydrates, which makes them suitable for people managing IBS with a low FODMAP approach.
4. Zero cholesterol and fat: Regardless of variety, lettuce contains no cholesterol and no measurable fat. This is useful background if you’re monitoring either for cardiovascular reasons.

How Lettuce Fits Into Your Daily Diet

Pound for pound, lettuce is one of the least calorie-dense foods in the produce aisle. A full pound of iceberg lettuce contains roughly 65 to 70 calories total. That’s fewer calories than two large strawberries.

What makes lettuce practical is that it can fill half your plate for minimal calorie cost, leaving room for protein, healthy fats, and more concentrated vegetables. Healthline’s breakdown of crisphead lettuce nutrition notes that even the palest lettuce varieties provide measurable vitamin A and folate alongside those 10 calories per cup.

Measurement	Calories
1 cup shredded (iceberg)	10
100 grams (any variety)	15
1 standard serving (36 g)	5.4
1 whole head (iceberg, ~539 g)	80

The context matters more than the number. A salad with 3 cups of lettuce plus avocado, chicken, cheese, and dressing can quickly hit 500 to 700 calories — but the lettuce itself contributed less than 5% of that total.

The Bottom Line

Lettuce calories are almost negligible — 5 to 10 per cup regardless of variety. That makes it a useful base for volume eating, but its vitamin A, folate, and fiber content mean it’s not nutritionally empty either. Darker leaves like romaine and red leaf offer slightly more nutrients without raising the calorie count.

If you’re building a salad for weight management or nutrient goals, a registered dietitian can help you balance the low-calorie bulk of lettuce with toppings that actually move the needle on your protein, fat, and vitamin targets for the day.