Is Watermelon Keto-Friendly? (2024)

Compared to many other fruits, watermelon is relatively low in carbohydrates. Depending on your overall diet, you may be able to consume watermelon in moderation while following a ketogenic diet.

Watermelon is a delicious and refreshing summertime staple.

In addition to promoting hydration thanks to its high water content, it’s a good source of several nutrients, including vitamins C and A (1).

What’s more, watermelon contains several antioxidants, such as lycopene, which may be linked to improved heart health and a lower risk of certain cancers (2).

You may wonder whether watermelon can fit into the ketogenic, or keto diet, an eating pattern that involves limiting your carb intake and eating a high amount of healthy fats instead.

Given that the keto diet is highly restrictive and requires strict adherence to maximize results, many fruits are considered off-limits, causing some to find it somewhat challenging to follow.

This article determines whether watermelon can be enjoyed as part of a healthy keto diet.

Because most fruits are high in carbs, those following the ketogenic diet can only enjoy them in small amounts.

However, compared with other types of fruit, watermelon is relatively low in carbs.

In fact, 1 cup (152 grams) of diced watermelon contains about 11.5 grams of carbs and 0.5 grams of fiber, which means that it has about 11 grams of net carbs (1).

Net carbs is a term used to describe the number of carbs in a portion of food that is absorbed by the body. They’re calculated by subtracting the grams of fiber from the grams of total carbs.

Whether watermelon can fit into a ketogenic diet depends on what else you’re eating during the day.

On a 2,000-calorie diet, you may be restricting your carb intake to just 100 calories, or 25 grams, per day.

Therefore, a single serving of watermelon could take up nearly half of your daily carb allotment.

Though you can definitely fit watermelon into a keto diet, it may take careful planning and require you to reduce your portion sizes to keep your carb count in check.

Summary

Watermelon can fit into a ketogenic diet, but it may require careful planning and decreased portion sizes to stick within your daily carb allotment.

Restricting your carb intake doesn’t mean that you need to cut fruit out of your diet altogether.

In fact, several fruits can easily fit into a well-planned ketogenic diet.

For instance, avocados are low in carbs but high in heart-healthy fats and fiber, as well as a number of other important vitamins and minerals (2).

Lemons and limes are also much lower in carbs than other types of fruit (3, 4).

Plus, certain types of berries can be enjoyed in moderation.

For example, strawberries, raspberries, and blackberries contain moderate carb contents but are high in fiber, making them lower in net carbs (5, 6, 7).

Summary

In addition to watermelon, several other types of low carb fruits can be enjoyed in moderation on a ketogenic diet.

The ketogenic diet requires you to significantly cut back on carbs, which often means eliminating higher carb foods like fruit from your diet.

Fortunately, compared with other fruits, watermelon is relatively low in carbs and can be enjoyed as part of a ketogenic diet.

However, it may require careful planning, and you may need to decrease your portion sizes to help fit it in.

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It’s recommended to work with a registered dietitian to ensure that your intake of important nutrients, such as fiber, are fulfilled daily, as well as to help incorporate the right amount and types of carbs on a keto diet.

Is Watermelon Keto-Friendly? (2024)

FAQs

Is Watermelon Keto-Friendly? ›

Watermelon is also a keto-friendly fruit. Watermelon is full of water and low in carbohydrates compared to many other popular fruits. One cup of diced watermelon contains 11.5 grams of net carbs (the total carbs minus grams of fiber). 4 Fiber per serving is 0.6 grams.

How much watermelon can I eat in keto? ›

“Mathematically, you could enjoy two to 2.5 cups of watermelon per day on a keto diet, assuming you eat no other carbs,” says Yawitz, cautioning that this scenario is pretty unlikely, considering the fact that even non-starchy veggies have carbs.

Can I eat watermelon on a low-carb diet? ›

Here's a juicy tip: Cup for cup, fruits that are high in water or fiber have fewer carbs than other fruits. Watermelon, the sweet summertime treat, is 92% water and the lowest-carb fruit by far, with 7.5 carbs for every 100 grams. It also has lots of vitamins A and C.

What fruits to avoid on keto? ›

Low-carb options like berries, avocado, tomatoes, olives, and coconut offer the nutritional benefits of fruits without impacting ketosis. Conversely, high-sugar fruits like bananas, grapes, pineapple, mango, and apples should be avoided as they can impede progress on a keto diet.

Are strawberries keto-friendly? ›

Some fruits, such as strawberries and blueberries, are generally considered keto-friendly because they are relatively low in carbohydrates and high in fiber. Conversely, peaches, grapes, and apples tend to be higher in carbs and may be more challenging to fit into a strict keto diet.

Can you eat pineapple on keto? ›

Pineapple is relatively high in net carbs and naturally occurring sugars. A serving (3.5oz) contains about 13 grams of carbohydrates and 9 grams of sugar. Therefore, pineapple is not keto-friendly if you're following a strict approach where the daily carbohydrate intake is 20-50 grams per day.

Can I eat blueberries on keto? ›

Blueberries are healthy and nutritious, and raw blueberries can easily be part of your keto diet — especially if you're counting total carbs rather than net carbs. However, dried blueberries and most food products made with blueberries will be too high in carbs for keto.

Can I eat cucumber in keto? ›

Cucumber is another popular salad vegetable. It contains many essential nutrients, including vitamin K. Cucumber is also suitable for the keto diet, as its carb content is just 3.63 g per 100 g. To make the carb content lower, a person can peel the cucumber before eating it.

Can I have cantaloupe on keto? ›

Although its fiber content is nothing to boast about, with fewer than 2 g per cup, and it has close to 13 g of sugar, cantaloupe contains a reasonable amount of carbs per serving, which makes it a fit on most keto plans.

Can I eat unlimited watermelon and lose weight? ›

Can you lose weight by eating only watermelon? Yes. Very low-calorie diets like the watermelon diet can lead to weight loss. But this diet isn't sustainable, and you're likely to regain the weight when you add other foods back into your diet.

Is peanut butter good for keto? ›

Peanut butter contains 2 grams of net carbs, 8 grams of fat, and 4 grams of protein in a tablespoon serving, making it a keto-friendly food[*]. With its low net carb count and high fat content, anyone can incorporate peanut butter into their keto lifestyle within reason.

What is the most keto-friendly fruit? ›

Here are 9 nutritious, tasty, and keto-friendly fruits.
  1. Avocados. Though avocados are often referred to and used as a vegetable, they're biologically considered a fruit. ...
  2. Watermelon. ...
  3. Strawberries. ...
  4. Lemons. ...
  5. Tomatoes. ...
  6. Raspberries. ...
  7. Peaches. ...
  8. Cantaloupe.
Mar 18, 2020

Is cottage cheese keto? ›

While cottage cheese is known for its high protein content, it also contains a relatively high amount of carbs and not that much fat, making it a less-than-ideal choice for keto. A ½-cup serving of cottage cheese contains 88 calories, 2.4 g of fat, 4.5 g of carbs, and 11.6 g of protein, per the USDA.

Is popcorn keto friendly? ›

Net carbs are calculated by taking the total grams of carbohydrate in a food and subtracting the amount of fiber. In this case, popcorn contains 6 grams of carbs per 1 cup serving and 1.2 grams of fiber, bringing the net carbs per serving to 4.8 grams. Yes friends, popcorn is indeed a keto food.

What is the lowest carb fruit? ›

1. Watermelon. This summer fruit has the lowest carbohydrate content, with only 7.55 g per 100 g of fruit.

How much fruit can I eat to stay in ketosis? ›

A person who aims to eat no more than 100–150 grams of carbs per day can easily fit in several pieces of fruit per day without going over their limit. However, someone who is on a very low-carb ketogenic diet with under 50 grams per day doesn't really have much room.

How much watermelon can you eat on a diet? ›

As with anything else in nutrition, moderation is key. Try to limit your watermelon intake to 2 cups (300 grams) per day if that's the only fruit you'll be having.

Can you eat too much fruit on keto? ›

Keep in mind that, consumption of fruit on the keto diet should still be limited. Modified keto dieters aim for around 30–50 grams of net carbs per day to maintain ketosis and maximize results, and you could get there quickly with too much fruit.

How many carbs are in 1 cup of fresh watermelon? ›

Carbs. Watermelon contains 12 grams of carbs per cup (152 grams).

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