How Many Calories In a Head Of Lettuce? | Leaf-By-Leaf Count

A medium iceberg head lands near 60 calories, while romaine and leaf lettuces shift with size, weight, and how tightly they’re packed.

If you mean a standard supermarket head, most people are talking about iceberg lettuce. In that case, the calorie count is tiny. A medium head comes out to about 60 calories, which is low for a food that can fill a big salad bowl and add a lot of crunch.

The phrase “head of lettuce” gets fuzzy once you leave iceberg behind. Romaine often comes as hearts, butterhead is softer and smaller, and loose leaf lettuce doesn’t form the same tight ball. So the clean answer is split in two: a medium iceberg head is about 60 calories, and other lettuce heads or hearts can land a bit lower or higher based on weight and shape.

How Many Calories In a Head Of Lettuce Across Common Types

The most direct official number comes from the FDA raw vegetable nutrition chart. It lists iceberg lettuce at 10 calories for one-sixth of a medium head. Multiply that by six, and a medium whole head lands at about 60 calories.

That’s the cleanest “head of lettuce” answer because iceberg is sold as a compact head and the FDA gives a head-based serving size. Loose leaf and romaine are a little messier. The same FDA chart lists leaf lettuce at 15 calories for 1 1/2 cups shredded, while California’s romaine nutrition fact sheet lists 1 cup of romaine at 8 calories. Those numbers still put lettuce in a narrow calorie band.

Why the number moves around

Calories in lettuce stay low, though the total can drift when the head changes in size or density. A tight iceberg head packs more edible weight into one unit than a floppy bunch of leaf lettuce. Romaine hearts sit in the middle. They’re denser than loose leaves, though not packed like iceberg.

• Type matters: Iceberg, romaine, butterhead, and leaf lettuce don’t weigh the same.
• Size matters: A small head and a large head can be far apart on the scale.
• Prep matters: Shredded cups trap air, while chopped dense leaves pack in more weight.
• Trimming matters: If you toss the core and wilted outer leaves, the calorie count drops a touch.

If the lettuce is iceberg, the math is easy

Iceberg is the easiest one to count without a scale. Cut a medium head into six even wedges and each wedge is about 10 calories. Eat half the head, and you’re at about 30. Eat the whole thing plain, and you’re near 60.

That’s why iceberg shows up so often in low-calorie meal plans. It adds bulk, chew, and crisp texture without pushing the total much at all. The lettuce itself is light; the extras are what turn a light bowl into a heavy meal.

Lettuce amount	Calories	How to think about it
Iceberg, 1 wedge of a medium head	10	Direct FDA entry for 1/6 medium head
Iceberg, 1/3 of a medium head	20	Two FDA wedges
Iceberg, 1/2 of a medium head	30	Three FDA wedges
Iceberg, 1 whole medium head	60	Six FDA wedges
Iceberg, 1 cup raw	8	Shown on the California fact sheet
Romaine, 1 cup chopped	8	Shown on the romaine fact sheet
Romaine, 2 cups chopped	16	Good rough count for a hearty bowl base
Leaf lettuce, 1 1/2 cups shredded	15	Direct FDA entry for leaf lettuce

What lifts the calorie count faster than the lettuce

When people say a salad “has a lot of calories,” the lettuce usually isn’t the reason. Dressings, cheese, nuts, seeds, croutons, crispy toppings, avocado, and oily marinades can outrun the lettuce in a hurry. A whole medium iceberg head is about 60 calories plain. One generous pour of creamy dressing can pass that on its own.

That doesn’t make those add-ons bad. It just means the head of lettuce is almost never the part worth stressing over. If you want a clean calorie count, count the lettuce once, then spend your energy on the parts you added after chopping it.

Plain lettuce stays in a tight band

The official charts line up on the big point: plain lettuce is light. Iceberg is low. Romaine is low. Leaf lettuce is low. You may see small differences from one chart to another because serving sizes change, cups pack differently, and heads don’t come off the shelf in one fixed size.

That’s normal. A “head” is a produce-bin unit, not a lab unit. If you want a fast working number, use the type first, then use the size in your hand. Small and loose means fewer calories. Heavy and tightly packed means more.

Calories are low, volume is the real perk

Lettuce shines because you can eat a lot of it for little calorie cost. That makes it handy in sandwiches, tacos, chopped salads, wraps, and burger bowls where you want crunch and volume. A big pile of lettuce looks like a lot of food, and on the calorie side it still stays modest.

Storage affects how much of the head you end up eating, too. USDA’s lettuce storage page says lettuce should be kept in the refrigerator for up to 1–3 weeks and washed right before use. That matters because soggy leaves get tossed, and waste changes the edible amount you actually count.

Romaine, leaf, and butterhead feel different on the plate

Romaine tends to eat bigger than its calorie count. The leaves are long, crisp, and easy to pile high. Leaf lettuce feels airy and fluffy, so a giant-looking bowl may still stay light. Butterhead is soft and tender, with a smaller, rounder head and less crunch. None of them are high-calorie foods on their own.

So if you’re trying to answer the question in regular kitchen terms, the smartest move is to match the estimate to the kind of lettuce in front of you. Iceberg gets the cleanest whole-head count. Romaine and leaf lettuce work better by the cup.

What changes the count	Lower side	Higher side
Lettuce type	Loose leaf, airy heads	Tight iceberg heads
Size	Small head or heart	Large, heavy head
Prep style	Torn leaves with lots of air	Densely chopped cups
Waste after trimming	More outer leaves removed	Most of the head eaten
What’s mixed in	Plain lettuce	Dressings, cheese, nuts, oils

Easy ways to count a head without getting fussy

You don’t need a food scale every time you chop lettuce. A few kitchen shortcuts get you close enough for daily tracking.

Use these rough rules

1. If it’s a medium iceberg head, count about 60 calories for the whole thing.
2. If you cut that iceberg head into six wedges, count 10 calories per wedge.
3. If it’s romaine, count about 8 calories per chopped cup.
4. If it’s leaf lettuce, count about 15 calories per 1 1/2 cups shredded.
5. If the salad has dressing or toppings, count those with care and treat the lettuce as the small part of the total.

A handy wedge rule for iceberg

This is the one shortcut that sticks. A medium iceberg head split into six wedges gives you an easy 10-calorie unit. That makes it simple to count tacos, burger toppings, chopped wedge salads, or half-head servings without digging for a calculator.

A practical calorie answer

If someone asks, “How many calories are in a head of lettuce?” the clean kitchen answer is about 60 calories for a medium iceberg head. That’s the closest thing to a one-line answer because it matches an official head-based serving.

If the lettuce is romaine, butterhead, or leaf lettuce, the whole head can shift with size and weight, though plain lettuce still stays light. So the safe everyday rule is simple: count a medium iceberg head at about 60 calories, use cups for romaine and leaf lettuce, and don’t forget that the dressing can outrun the greens in one pour.