Are Tomatoes Really Keto? (Everything You Need To Know)

Tomatoes are a low-carb, low-sugar fruit. Does that make them perfect for keto?

Most fruits are hard to work into the keto diet because many of them contain high sugar content, which is a type of carbohydrate your body uses for energy. As the goal of keto is to get your body to use fat for energy instead of carbs, you want to avoid high sugar foods as much as possible.   

If you’re not well-versed in keto, coming up with your own recipes can be a challenge, especially when you’re not sure how many carbs are in the ingredients. Luckily, your solution to this problem can be solved with a meal service that whips up keto meals for you. Otherwise, we’re here to give you tips! Like telling you that tomatoes do in fact, work with keto! 

Tomatoes are keto! They're low sugar and have a lot of health benefits.

Table of Contents 
Tomatoes Are a Low-Sugar Fruit 
Why Eat Tomatoes (Nutrition Facts) 
How to Incorporate Tomatoes into Your Diet 
Keto-Friendly Recipes Using Tomatoes 

Tomatoes Are a Low-Sugar Fruit 

Fruits are usually identified by whether they have seeds within the parts you can eat, and if they develop from a flower. Both are true for tomatoes, technically making them a fruit! Most fruits can also be identified by how sweet they are based on how much sugar they contain, which is where tomatoes differ.  

Tomatoes are a low sugar and low-carb fruit.

Tomatoes have low-sugar content and are more savory than sweet. They also have virtually no fat content, making them ideal for even the strictest keto diets. You can eat a whole raw, medium-sized tomato (123g) without breaking the proverbial carb bank: 

Net Carbs: 1.3g 

Fiber: 1.5g 

Fat: 0.2g 

Sugar: 3.2g 


Tomatoes, unlike most fruits, are low-sugar, low-carb, and have almost no fat which makes them great for keto dieters.

Why Eat Tomatoes (Nutrition Facts) 

They’re high in potassium, Vitamin C, folate, and a compound called lycopene. Lycopene is found in many red fruits which gives them their red hue. But beyond that, lycopene is an antioxidant that can help protect you against UV ray damage caused by the sun, improve heart health, and reduce risk for prostate, digestive, and pancreatic cancers.  

In general, tomatoes are great at fighting inflammation that can cause chronic illnesses and helping lower LDL levels (“bad” cholesterol).  

One large tomato has about 5 net carbs and 5g of sugar.


Tomatoes have anti-inflammatory and antioxidant qualities that reduce risk for cancer and heart health problems, and can help protect you from UV damage from the sun.

How to Incorporate Tomatoes into Your Diet 

Tomatoes can be used in all kinds of recipes ranging from savory dishes to simple sides. The way you cook them has an impact on its flavor, giving you lots of ways to incorporate them into your diet. Here’s a few ideas for how to add tomatoes into every meal: 


  • Dice tomatoes and add to an omelette 
  • Add crushed canned tomatoes to your egg scramble 
  • Top your breakfast dish with sundried tomato pesto for extra tang 


  • Slice tomatoes, top with tuna salad and eat as open-faced “sandwich” 
  • Dice and use as a topping for a salad 
  • Replace your burger bun with sliced tomato halves 
  • Add tomato slices to any sandwich or wrap 


  • Sauté cherry tomatoes and serve with riced cauliflower as sides for baked chicken breast 
  • Slice and use as a topping on a keto chicken crust pizza  
  • Add chunks of tomatoes to your soup or stew 


  • Make your own marinara sauce using olive oil, basil, onion, and spices and use as a dip 
  • Make homemade salsa with extra diced tomatoes 
  • Sprinkle tomato slices with cheese, top with parsley, and bake until crispy 
  • Blend into a smoothie (adding other veggies to disguise the flavor if you need to!) 


Adding tomatoes to your diet is as easy as dicing, chopping, blending, or slicing a few and adding them to any dish.

Keto-Friendly Recipes Using Tomatoes 

Vegan Tomato Basil Pesto Tofu Scramble 
Calories: 330  Fat: 26g Net Carbs: 4g 

Vegan Tomato Basil Pesto Tofu Scramble using cherry tomatoes!

Keto Stuffed Tomatoes 
Calories: 166 Fat: 13g Net Carbs: 4g 

Stuffed tomatoes baked to tangy perfection.

JUST Egg Spinach & Ricotta Muffins 
Calories: 113 Fat: 7g Net Carbs: 3g 

Egg cups are fast and portable ways to get your tomato-fueled breakfast in.

Easy Keto Tomato Soup 
Calories: 158  Fat: 11g Net Carbs: 8g 

Tomato soup without sugar added is highly nutritious!

Eggplant Lasagna Recipe 
Calories: 223  Fat: 15g Net Carbs: 12g 

Use eggplant in lieu of noodles to support your keto-approved tomato sauce Italian dishes.

Keto Tomato Sauce 
Calories: 108 Fat: 9g Net Carbs: 4g 

Every good dish starts with a great tomato sauce!

Zucchini Tomato Casserole 
Calories: 180 Fat: 16g Net Carbs: 4g 

Add more veggies (like tomatoes) to a casserole for a filling, delicious meal.

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