Things You Don’t Want to Hear About Calories in Watermelon

Watermelon is one of the best-known refreshing summer fruits. Whether you have your watermelon fresh, chilled in the fridge, or even in a smoothie, it’s a delicious and nutritious treat. If you are on a diet or any sort of eating plan, you may have asked yourself “How many calories in watermelon?” This article will show you just how many calories there are in watermelon, and well as some other nutritional information about this fun fruit.

Below is the table for Calories in Watermelon. If you want to know the kilojoules in watermelon instead, just multiply the calories by 4.2 to get the number of kilojoules. The list will also show the amounts of fat in watermelon, and carbs in watermelon too.

Watermelon Type





Serving Size

Fresh Watermelon: Diced 46 0.3g 11.6g 0.9g 1 cup
Fresh Watermelon: Slice 92 0.6g 23.2g 1.8g 1 large slice

As the watermelon calorie table above shows, the calories in watermelon are very similar to the calories in strawberries or the calories in oranges. Just as with most fruit, almost all of the calories in watermelon come in the form of carbohydrate or sugars.

Calories in Watermelon

There is more to a watermelon than just calories however. Watermelons are rich in many Vitamins and Minerals that help the body to function properly, as well as bolstering the immune system. Some of these nutrients are listed below:

  • Potassium
  • Vitamin A
  • Calcium
  • Magnesium
  • Vitamin B5
  • Vitamin B1
  • and Vitamin C which acts as an antioxidant
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Watermelon Rind in Cooking

Watermelons are about 92% water, which is how the watermelon derived it’s name. Interestingly the rind of a watermelon is also edible and contains many nutrients itself. Because watermelon rinds are not exactly known for their exceptional taste, this part of the watermelon is rarely consumed in western culture. In China, watermelon rinds are stir-fried, stewed, or pickled. A recipe for Chinese pickled watermelon rinds is listed below:

  • 3 litres water
  • 200 g salt
  • 2.5kg watermelon rind, white part only, sliced into cubes
  • 10g whole cloves
  • Half a teaspoon of mustard seeds
  • 40g cinnamon sticks, broken into pieces
  • 1 litre apple cider vinegar
  • 400g sugar

Method: Combine the water and salt, then add the watermelon rinds and refrigerate overnight. Drain the watermelon rinds, and then boil them for 30 minutes. Put the mustard seeds, cloves and cinnamon sticks in a cloth bag, and then put them into a pan. Add the sugar and vinegar, and then bring to a boil. Remove from heat and let stand for 20 minutes before adding the drained watermelon rind and simmering the mixture until the watermelon rind becomes opaque. At this point you can remove the cloth bag and add the mixture to pickling jars in the normal way.

Calories Watermelon

The calories in watermelons tend to stay about the same across all the varieties, and there are over a thousand different varieties, ranging in colour from red, to orange, yellow or white. The taste of the different varieties also varies, along with the size. The smallest variety of watermelon weights less than a pound, while the world record holding watermelon was a Carolina Cross Watermelon weighing 262 pounds (about 119kg).

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Watermelons are an excellent and healthy fruit, which should form part of any nutritious diet or eating plan. They do contain calories however, so be sure to factor those calories in when designing your food and exercise schedule. Use the nutritional calculator here to work out how much exercise you need in order to maintain your weight, gain weight, or lose weight. Calculators like this can take a lot of the hassle out of designing your workout routine, and allow you to spend more time keeping fit!