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A medium-sized, round red tomato with smooth, slightly glossy skin and a small green stem attached.
●Low GI
★Natural

Tomato (Medium) Calories

Vitamin C, low calorie, source of lycopene

In season: Spring · Summer · Autumn

CALORIES · 100 G

18kcal

GI

15low

POTASSIUM · 100 G

237mg

FIBER · 100 G

1.2g

Quick answer

1 piece (medium) of Tomato (Medium) (123 g) has 22 calories. That works out to 18 calories per 100 g. It contains 4.8 g of carbs, 1.1 g of protein, 0.2 g of fat and 1.5 g of fiber. Its 16.9 mg of Vitamin C covers 19% of the Daily Value. Its glycemic index is 15 (low), so it raises blood sugar slowly.

Tomato (Medium) Nutrition Facts

Selected: 1 piece (medium) · 123 g

22

KCAL / 123G

Carbs

4.8g

· 2% DV

Protein

1.1g

· 2% DV

Fat

0.2g

· 0% DV

Fiber

1.5g

· 5% DV

DV is the share of the daily value covered, on a 2,000 kcal reference diet.

Calories come from: Carbs 76% · Protein 17% · Fat 7%

Tomato (Medium) nutrition facts table · 1 piece (medium) (123 g)

NutrientAmount% DV
Calories22 kcal
Total fat0.2 g0%
Saturated fat0.04 g0%
Trans fat0 g
Sodium6.15 mg0%
Total carbohydrate4.8 g2%
Fiber1.5 g5%
Protein1.1 g2%

Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.

Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.

Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.

Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.

Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.

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How Many Calories in 1 Tomato (Medium)?

ServingAmountCalories
1 piece (medium)123 g22 kcal
1 slice (thin)20 g4 kcal
1 slice (thick)35 g6 kcal
1 piece (small)80 g14 kcal
100 g100 g18 kcal
1 serving (medium)100 g18 kcal
1 piece (large)170 g31 kcal
1 cup (chopped)180 g32 kcal
1 cup (diced)240 g43 kcal

Calculated from 18 calories per 100 g.

Frequently Asked Questions About Tomato (Medium)

Should a medium tomato be stored in the fridge?

A ripe medium tomato can be refrigerated to slow spoilage, but cold temperatures may dull its flavor and texture. For the best taste, let it return to room temperature before eating; leave unripe tomatoes on the counter.

How can you tell if a medium tomato is ripe?

A ripe medium tomato has an even red color, a fresh tomato aroma, and gives slightly when gently pressed without feeling mushy. If it is firm and has little smell, leave it at room temperature to ripen.

Can you eat the skin of a medium tomato?

Yes, the skin of a medium tomato is edible, so peeling it is optional. Keep it on for salads and everyday cooking; for a smoother soup or sauce, briefly blanch the tomato and slip off the skin.

Can you freeze a medium tomato?

Yes, you can freeze a medium tomato whole or chopped in a freezer-safe container. It will become soft after thawing, so use it in cooked dishes such as sauces, soups, or stews rather than fresh salads.

Is a medium tomato a fruit or a vegetable?

A medium tomato is botanically a fruit because it develops from a flower and contains seeds. In cooking, it is treated as a vegetable because it is usually used in savory dishes rather than desserts.

Do you need to wash a medium tomato before eating it?

Yes, rinse a medium tomato under clean running water before cutting or eating it, and rub the surface gently. Washing first also helps prevent dirt on the skin from being transferred inside by a knife.

Does cooking a medium tomato make its lycopene easier to absorb?

Yes, cooking a medium tomato can make its lycopene easier for the body to absorb by breaking down the tomato’s cell structure. Having it with a little oil, as in a tomato sauce, can further support absorption.

Can a medium tomato trigger acid reflux?

Yes, the acidity of a medium tomato can trigger heartburn or reflux symptoms in some people. If you notice a consistent reaction, try a smaller serving or avoid tomatoes when symptoms are active.

Why does a medium tomato taste mealy?

A medium tomato may taste mealy if it was stored too cold, harvested before fully ripening, or kept for too long. Letting it come to room temperature can improve its aroma, though it will not restore a spoiled or badly textured tomato.

Can dogs eat a medium tomato?

Yes, dogs can have a small piece of ripe red medium tomato, plain and without seasoning. Do not give them green tomatoes, leaves, or stems, which contain tomato plant compounds that can be harmful in larger amounts.

Tomato (Medium) Vitamins & Minerals

Vitamins

Vitamin C

16.85mg · 19% DV

Vitamin K

9.72µg · 8% DV

Biotin

1.85µg · 6% DV

B6

0.1mg · 6% DV

Minerals

Potassium ⭐

292mg · 9% DV

Copper

0.07mg · 8% DV

Manganese

0.14mg · 6% DV

Phosphorus

30mg · 4% DV

Sodium

6.15mg · 0% DV

Tomato (Medium) Glycemic Index

GLYCEMIC INDEX

15
Low
0 Low5570100

GLYCEMIC LOAD

1.2
Low

Accounts for portion size — a more realistic measure than GI alone.

How to Burn Off Tomato (Medium)

To burn the 22 calories in 1 piece (medium) (123 g):

🚶

5min

Walking (5 km/h)

🏃

2min

Running (8 km/h)

🚴

3min

Cycling

🏊

3min

Swimming

Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.

What is Tomato (Medium)?

A medium tomato is a juicy, seed-filled fruit treated as a vegetable in cooking. Tomatoes originated in South America and were domesticated in Mexico; today they are grown and eaten around the world. Their smooth skin gives way to tender flesh with a fresh, gently sweet and tangy flavour. Cooking makes the taste richer and softer.

Enjoy one sliced in a salad or sandwich, or add it to sauces, soups and other cooked dishes. It is mostly water and naturally low in calories, while providing vitamin C and lycopene. Pair it with olive oil, herbs and a little salt for a simple side, or add beans or eggs to make a more filling meal.

How Nutritious Is Tomato (Medium)?

Nutrient density

Very high

80/ 100

How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.

Satiety score

Medium

46/ 100

An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.

Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.

Is Tomato (Medium) Processed?

NOVA 1

Unprocessed

1. Unprocessed

2. Minimally Processed

3. Processed

4. Ultra-Processed

NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.

Does Tomato (Medium) Contain Allergens?

No known major allergens

Gluten free
Dairy free
Eggs free
Peanuts free
Tree nuts free
Fish free
Soy free
Sesame free

Which Diets Is Tomato (Medium) Good For?

Vegan

✓ Suitable

Vegetarian

✓ Suitable

Gluten-Free

✓ Suitable

Dairy-Free

— Not suitable

Mediterranean

✓ Suitable

Paleo

✓ Suitable

Whole30

— Not suitable

DASH

— Not suitable

Keto

✓ Suitable

Low FODMAP

— Not suitable

Tomato (Medium) Fat Profile

SATURATED

0.04g

MONOUNSATURATED

0.04g

POLYUNSATURATED

0.06g

⚖️

Omega 6:3 ratio 4:1

Below the ideal 4:1 — a good omega balance.

Compare Tomato (Medium)

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Foods Similar to Tomato (Medium)

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🥄

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44 kcal

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20 kcal

🥗

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110 kcal

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Oven-Roasted Mixed Vegetables

65 kcal

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Nutrition data compiled from USDA FoodData Central and scientific sources.