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How much protein is in watermelon?

1 cup diced (152 g) of watermelon has 0.9 g of protein and 46 calories: about 2 g of protein per 100 calories, which is low.

At a glance

  • 0.9 g protein and 46 calories per 1 cup diced (152 g).
  • 2 g protein per 100 calories: #442 of 536 foods in our USDA list, #9 of 47 in fruit.
  • 0.6 g fiber and 2 mg sodium per serving.

What is watermelon like to eat?

Watermelon is a large, juicy melon with sweet red flesh that is mostly water. It is a summer favorite eaten chilled in wedges or cubes, and it pairs well with feta and mint.

How can you eat more watermelon?

Try this

Cube and serve chilledMake a salad with feta and mintBlend into a cold drinkPair with cottage cheese for a snack

Is watermelon good on a GLP-1?

Cold watermelon is light and refreshing, which can make it easy to eat on days when heavier food is hard. Protein density matters more when your appetite is small: see protein on a GLP-1.

How does watermelon compare?

FoodServingProteinCaloriesProtein per 100 kcal
Watermelon1 cup diced0.9 g462 g
Mango1 cup sliced1 g1021 g
Feta cheese1/4 cup7.5 g1047.2 g
Cottage cheese1/2 cup12.4 g9513.1 g

Close to watermelon per calorie: brown rice (2.2 g), white rice (2.1 g), carrots (2 g), orange (1.9 g).

Compare more foods with the protein finder, or see protein in every food we cover.

What should you look for when you buy it?

Pick a melon that feels heavy for its size with a creamy yellow spot where it rested on the ground.

What's the full nutrition for watermelon?

NutrientPer 1 cup diced (152 g)Per 100 g% Daily Value
Calories4630
Protein0.9 g0.6 g2%
Fat0.2 g0.1 g
Saturated fat0 g0 g0%
Carbohydrate11.4 g7.5 g
Fiber0.6 g0.4 g2%
Sugar9.4 g6.2 g
Sodium2 mg1 mg0%
Calcium11 mg7 mg1%
Iron0.4 mg0.24 mg2%
Vitamin B120 mcg0 mcg0%
Vitamin D0 mcg0 mcg0%

USDA FoodData Central, SR Legacy: "Watermelon, raw". % Daily Value uses the FDA's values for adults (protein 50 g, fiber 28 g, sodium 2,300 mg). "Not listed" means USDA didn't measure it for this food, not that it's zero. Brands differ, so check your label.

General education about food, not medical advice. If you have kidney disease or another condition that affects protein, talk to your doctor or a registered dietitian about your own needs.
Sources (3)
  1. USDA FoodData Central (SR Legacy): Watermelon, raw
  2. FDA: How to understand and use the Nutrition Facts label
  3. Mozaffarian et al. Nutritional priorities to support GLP-1 therapy for obesity: a joint advisory (ACLM, ASN, OMA, TOS). Obesity Pillars, 2025

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