How Many Calories Are In A Slice Of Melon? | Smart Serving Guide

Calories In One Melon Slice By Type

Most people picture a wedge when they say “slice.” Calorie counts swing with the size of that wedge and the melon you picked. Watermelon carries the most water by weight, so it lands low per 100 grams. Honeydew sits a touch higher. Cantaloupe comes in close behind honeydew.

Here’s a quick table using common wedge sizes that match household measures found in nutrition databases. Slice weights are shown in grams so you can cross-check with a kitchen scale if you like.

Typical Wedge Weights And Calories

Melon Type	Slice Weight (g)	Calories Per Slice
Watermelon (about 1/16 melon)	~286 g	~86 kcal
Cantaloupe (medium wedge)	~69 g	~23 kcal
Cantaloupe (large wedge)	~102 g	~35 kcal
Honeydew (1/8 of 6–7" melon)	~160 g	~58 kcal

Once you set your daily calorie intake, these wedges fit neatly as hydrating snacks or sides. If you eat two or three slices, just add the numbers—no hidden extras from fat or starch.

How We’re Defining A Slice

A slice here means a triangular wedge from a round melon, rind removed for the calorie estimate. If you prefer cubes or balls, you can still match the numbers by weight. The easiest path: weigh your portion once, then eyeball that size next time.

Watermelon wedges are usually thicker on party platters, which bumps the grams fast. Cantaloupe wedges vary more because fruits range from small to large. Honeydew tends to be denser than watermelon, so similar-size looking pieces can differ on the scale.

Quick Conversion: Weight To Calories

Use this simple rule of thumb for fresh melon flesh (no rind):

Handy Formula

Calories ≈ grams × (kcal per 1 g)

• Watermelon: ~0.30 kcal per gram (≈30 kcal per 100 g)
• Cantaloupe: ~0.34 kcal per gram (≈34 kcal per 100 g)
• Honeydew: ~0.36 kcal per gram (≈36 kcal per 100 g)

Worked Examples

Watermelon wedge at 280 g → 280 × 0.30 ≈ 84 kcal. Cantaloupe wedge at 100 g → 100 × 0.34 ≈ 34 kcal. Honeydew wedge at 160 g → 160 × 0.36 ≈ 58 kcal.

Serving Size Context That Helps

Many labels quote cups, not slices. A fruit cup measure is handy for salads and side bowls. The what counts as a cup of fruit page lists common equivalents and makes it easy to tally portions at home or work.

Fresh melon has no added sugar. That matters if you watch your total daily sugar target. The FDA’s guidance on added sugars explains the limit is under 10% of daily calories and refers to sugars added to foods, not the natural sugars in fruit.

Watermelon Wedges: What To Expect

Watermelon is the lightest per gram. A normal wedge near 286 g lands near 86 calories. Go thinner and it falls fast; go thick and you can double the count without noticing because the texture is airy and juicy.

Smart Tips For Watermelon

• Cut even-thickness wedges to keep calories predictable.
• Serve chilled; colder slices feel more refreshing, which helps smaller portions feel satisfying.
• Sprinkle a pinch of salt only if you want it; salt won’t change calories but can nudge you to eat more, so plate the amount first.

Cantaloupe And Honeydew Wedges: What To Expect

Cantaloupe varies more by fruit size. A medium wedge (about 69 g) sits near 23 calories; a larger wedge (about 102 g) sits near 35 calories. Honeydew wedges cluster mid-range—a common 160 g piece averages around 58 calories.

Smart Tips For Cantaloupe And Honeydew

• Trim close to the rind; the greenish rim on honeydew is firmer and adds grams fast.
• Go with two slim wedges instead of one thick cut to slow down the pace.
• Pair with yogurt or cottage cheese if you want more protein without a big calorie jump.

Factors That Change The Number

Ripeness And Water Content

Riper melons often taste sweeter but still carry similar calories per 100 g. The swing you’ll see day to day comes more from cut size than sugar concentration.

Rind Trimming

Leaving a thick rind on the plate drops the edible grams. That’s why two wedges that look identical can land 10–20 calories apart at the table.

Juice Loss

Precut platters leak a little juice during storage. The calories stay with the flesh, but the piece can dry slightly, which makes bites feel denser. Gauge by weight, not looks.

Portion Tips That Work In Real Life

Use your hand for quick estimates. A wedge the size of your palm is roughly 80–120 g for many people, which puts watermelon at ~24–36 calories and cantaloupe near ~27–40 for a thicker cut.

If you track macros, weigh a typical wedge once. Save that target on your phone. Next time, match the shape to your photo and log the same grams with minor tweaks.

Mood snack? Add a pinch of chile and lime to a thin wedge. The flavor pop makes a 30–60 calorie snack feel special without adding sauce calories.

Compare Common Portions

Per-100-gram values keep everything tidy. Pair that with a familiar slice example to sanity-check your plate.

Melon Type	Calories Per 100 g	Example Slice
Watermelon	~30 kcal	~86 kcal per ~286 g wedge
Cantaloupe	~34 kcal	~23–35 kcal per 69–102 g wedge
Honeydew	~36 kcal	~58 kcal per ~160 g wedge

Prep Ideas Under 100 Calories

Single-Slice Snack

One chilled watermelon wedge with a squeeze of lime and cracked black pepper. Around 80–90 calories, loads of crunch.

Two-Wedge Mix

One small cantaloupe wedge and one small honeydew wedge. You get texture contrast and land near 80–95 calories based on cut size.

Mini Fruit Plate

Half cup melon cubes plus a few berries. Still under 100 calories in most builds and easy to log by weight.

How To Make The Math Automatic

Save three numbers in your notes app: 0.30 for watermelon, 0.34 for cantaloupe, 0.36 for honeydew. Multiply by grams on the scale. That’s it.

If you eat melon with breakfast often, pre-log a “house wedge” in your tracker app using your kitchen scale once. Next time, select that saved entry and adjust by a few grams if your cut looks bigger or smaller.

When Slices Turn Into Bowls

Fruit salads, salsas, and smoothies switch you from wedges to cups. One cup of cantaloupe balls is about 60 calories, while a cup of watermelon balls lands near the mid-40s. If you bounce between wedges and cups, keep both weights handy.

Small Gotchas To Watch

Salt And Seasonings

Salt, lime, and chile flakes add flavor with negligible calories. Syrups and sweet dips add more. If a platter comes with a sweet yogurt dip, that’s where most of the extra energy hides.

Cheese And Charcuterie Pairings

Prosciutto-wrapped melon is a classic. Delicious, but the meat brings the calories. Plate the melon first, then add the wrap so you can see the trade-off on the dish.

Bottom Line For Slices

Melon wedges are light by design. One or two slices fit almost any plan, and the math stays friendly with a scale or a quick look-up. Want a wider primer on calorie planning? Try our calories and weight loss guide for step-by-step energy budgeting.