Things Your Boss Expects You Know About Calories in a Tomatoes

Tomatoes are an amazingly healthy and vitamin rich food that can be used in a wide range of recipes and meals. If you want to know how many calories in a tomato, we can show you on the table below. Keep in mind that the main factor regarding the calories in a tomato is the size of the tomato itself, as a large tomato will obviously have more calories than a small tomato or a cherry tomato. The nutrition information provided here is from the U.S. Department of Agriculture; an organization which has conducted nutritional tests into tomatoes of various sizes.

The table below will show you how many calories are in a tomato. To provide you with more complete nutritional information we have also included the amount of protein in a tomato, the amount of fat in a tomato, and also how many carbs are in a tomato. We have also included the calories in canned tomatoes.


Size Calories Carbohydrate Fat Protein
1 large Tomato (182g)
1 medium Tomato 123g 33 4.7g 0.25g 1g 1 small Tomato 91g 16 3.5g 0.18g 0.8g Per 100g 18 3.8g 0.2g 0.9g Per Tomato Slice (15g)
Per Cherry Tomato (17g) 3 0.66g 0.03g 0.15g
Canned Tomatoes per 100g 17 4g 0.13g 0.8g

How Many Calories in a Tomato

So what can we learn from these nutritional figures? Well they show us that the different sizes of tomatoes have different calorie contents, but they also show that the calories in a tomato are extremely low, no matter what the size. We can also see that there is virtually no fat in a tomato nutrition facts, making them an excellent food for people on weight loss diets. We can also see that there is only a negligible amount of protein in a tomato, so you might need to find a different source of protein, such as a hard boiled egg or a chicken breast.

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How Many Calories in Tomatoes?

How many calories in tomatoes isn’t the only question that should be asked: we should also find out about the vitamins in tomatoes. There are other nutritional benefits to tomatoes as well as their low calories: tomatoes nutrition facts are full of a whole range of vitamins and minerals. Fresh fruit and vegetables are well known as being fantastic sources of nutrients, and tomatoes are certainly no exception. The vitamins contained in one medium tomato are listed below:
  • Vitamin A – 17 IU
  • Vitamin B1 (thiamine) – 0.035 mg
  • Vitamin B2 (riboflavin) – 0.032 mg
  • Niacin – 0.556 mg
  • Folate – 35 mcg
  • Pantothenic Acid – 0.18 mg
  • Vitamin C – 84.7 mg
  • Vitamin K – 3.2 mcg

How Many Minerals in a Tomato?

As well as the calories and vitamins in a tomato, there are also minerals that can provide health benefits. We have listed the most relevant minerals on the table below. All these figures are for one medium tomato:

  • Potassium – 220 mg
  • Phosphorus – 35 mg
  • Magnesium – 19 mg
  • Calcium – 23 mg
  • Sodium – 1 mg
  • Iron – 0.59 mg
  • Selenium 0.6 mcg
  • Manganese – 0.556 mg

Tomatoes are a great natural food that not only provides you with many vitamins, minerals, and nutrients, but does it without excess calories. In fact, tomatoes are one of the lowest calorie foods around. So you can eat them to your heart’s content almost regardless of what sort of eating plan or weight loss diet you are on. Unlike some of the sweeter fruits (such as watermelon or strawberries), tomatoes contain very little sugar. So you can even enjoy tomatoes as part of a low-carb diet.