How Many Calories Are In One Tomato? | Quick Facts

Calories In One Tomato: Sizes, Varieties, And Weights

Tomatoes are light on calories. The big swing comes from size and water content. The standard reference point is the medium red tomato at 123 g, which lands near 22 calories. A small whole tomato averages 91 g at about 16 calories, while a large one near 182 g sits around 33 calories. Cherry pieces are tiny but tasty; one cherry tomato at roughly 17 g gives about 3 calories. Those counts come from lab tables that track typical weights and nutrients for common produce sizes.

Here’s a quick table that lets you scan by size and common types. Use it to portion salads, sandwiches, and sauces without breaking out a calculator.

Tomato Type Or Size	Typical Weight	Calories
Cherry, one piece	~17 g	~3 kcal
Small whole	~91 g	~16 kcal
Medium whole	~123 g	~22 kcal
Large whole	~182 g	~33 kcal
Plum/Roma	~62 g	~11 kcal
1 cup cherry tomatoes	149 g	~27 kcal
Per 100 g (raw)	100 g	~18 kcal

Numbers in the table reflect typical sizes. If your tomato looks heftier, weigh it once, then eyeball future picks with confidence. Snacks fit better once you set your daily calorie needs.

What Changes The Count From One Tomato To The Next

Water Weight And Ripeness

Tomatoes are mostly water. As fruit ripens and loses a touch of moisture, grams shift a little, and calories follow. A firmer piece with more water will weigh more for the same size and end up with a similar or slightly lower number per 100 g.

Variety And Shape

Cherry and grape tomatoes run small and punchy. Romas are meatier, handy for sauces with less liquid. Beefsteak types give big slices for burgers and toast. Counts move with weight, not with variety alone, so the scale tells the truth every time.

Peeling, Seeding, And Draining

Removing seeds or draining diced pieces before a recipe drops water out. The portion weighs less, so calories per serving shift. If you drain a cup of chopped tomato until it looks dry, the cup holds more solids and the number per cup bumps up.

Does Cooking Change Tomato Calories?

Raw and baked tomatoes stay close per 100 g because cooking mainly changes water. Heat drives off moisture, so the same pan volume can hold more solids after roasting. The per-100 g figure stays similar, yet a heaping spoon of roasted pieces often delivers more grams than the same spoon of raw chunks. Oil is the swing factor, since fat adds 9 calories per gram.

Oil, Cheese, And Bread Crumbs

A tablespoon of olive oil adds about 119 calories to the pan. If that pan coats four portions of roasted tomatoes, that’s about 30 extra calories each. Sprinkle cheese or crumbs and the curve rises again. Keep toppings light when you want the tomato to carry the dish.

Seasonings With No Calorie Baggage

Lean on salt, pepper, garlic, basil, and a splash of vinegar. Big flavor, minimal energy. Roast cut sides up to keep juices in place, or blister halves in a hot pan for a quick side.

Tomato Products: Paste, Puree, Sauce, And Juice

Tomato paste is concentrated. A tablespoon sits near 13 calories, while a quarter cup runs about 54 calories. Tomato sauce and puree land lower per spoon when no oil or sugar is added, but labels vary by brand. Tomato juice is light at about 41 calories per cup. Salted versions carry more sodium; choose unsalted when you want a gentler profile.

Product Or Method	Common Serving	Calories
Tomato paste	1 tbsp (16 g)	~13 kcal
Tomato paste	1/4 cup (66 g)	54 kcal
Tomato juice, unsalted	1 cup (243 g)	41 kcal
Raw tomatoes	Per 100 g	18 kcal
Roasted tomatoes	Per 100 g	~18 kcal
Canned diced, drained	1/2 cup	~20–30 kcal

For brand products, scan the nutrition label. A plain canned sauce with only tomato, salt, and herbs sits close to raw tomato per spoon; an oil-rich jarred sauce lands far higher. Tomato paste brings deep flavor in tiny amounts, which is handy when you need impact without much volume. You can check the lab tables for the baseline values for raw tomatoes and canned tomato paste.

How To Estimate Tomato Calories Without A Scale

Use Hand Cues

A cherry tomato is a marble. Two fit in the hollow of your palm and add only a few calories. A medium whole tomato is a tennis ball in size; one piece adds roughly 22. A big beefsteak is closer to a softball; plan around 30–35.

Count Slices And Spoonfuls

One medium tomato makes four good slices for a sandwich. That’s your 22 calories, plus the bread and spread. A half cup of chopped tomato is about eight heaping tablespoons. With raw pieces the count lands near 15–20, while a thick cooked salsa pushes higher per spoon.

Borrow The Per-100 g Rule

Keep the 18 calories per 100 g figure in your head. When a recipe lists grams or ounces, you can compute fast. If the dish calls for 300 g of chopped tomato, budget about 54 calories before add-ins.

Nutrition Snapshot Beyond Calories

A medium tomato brings vitamin C, potassium, folate, and some vitamin A. The fruit is mostly water with fiber that fits well in salads, omelets, and rice bowls. Cooked dishes often deliver more lycopene in an easy-to-absorb form. Pair with a dab of olive oil to help carry fat-soluble compounds while keeping calories steady.

Smart Ways To Add One Tomato To Meals

Breakfast And Brunch

Slice into an egg wrap, top toast with a quick salsa, or fold into a veggie omelet. The mild count helps you stack more on the plate without chasing calories.

Lunch And Dinner

Layer slices on a grilled chicken sandwich, toss wedges into a leafy bowl, or roast halves beside fish. For a richer sauce, stir a teaspoon of paste into pan juices and thin with water.

Snacks And Sides

Mix cherry tomatoes with cucumber, olives, and herbs. Skewer with cheese cubes when you want a quick bite that stays within your day’s plan. For portion control, set a small bowl out and eat mindfully before refilling.

Buying, Storing, And Prepping

Picking Good Fruit

Choose tomatoes that feel heavy for their size with smooth skin and no soft spots. Color should match the type you’re buying, from deep red to golden cherry. Smell the stem end; a clean tomato scent is a good sign.

Storage Tips

Keep ripe tomatoes at room temp away from sun. Chill only when fully ripe to slow softening. Bring cold tomatoes back to room temp before you slice to get better flavor.

For canned products, check the ingredient list. Tomato, salt, and herbs keep calories steady; extra oil or sugar shifts counts fast and changes the taste and texture. Use labels.

Prep Shortcuts

For clean slices, use a serrated knife. To peel, score an “X” at the base, blanch for 20 seconds, and slip skins off. Seed for a smoother salsa, or leave seeds in for a juicy bite.

Your Tomato Calories, Dialed In

One tomato rarely breaks the bank. Pick the size that fits your plate, add herbs and acid for zip, and save oils for when you want a richer dish. Want a deeper primer on setting targets? Try our calorie deficit guide for a full walk-through.

Common Serving Examples

Salad bowl with two medium tomatoes: about 44 calories before dressing. Add cucumber and herbs, then finish with lemon. A teaspoon of olive oil adds roughly 40 calories, so measure instead of free-pouring.

Pasta with fresh sauce: simmer two cups of chopped tomato with garlic and basil. The tomato portion sits near 60–70 calories. Stir in one tablespoon of paste for about 13 more. Use starchy pasta water for body in place of cream.

Sandwich stack: four slices from a medium tomato bring about 22 calories. Pair with lean protein and whole-grain bread. If mayo is a must, keep it to a teaspoon for a small bump.

Quick Calculator Examples

Per 100 g equals 18 calories is a handy anchor. Three quick cases: 250 g of salsa is about 45. A baking dish with 500 g of halved tomatoes is near 90 before oil. A stew using 800 g across the pot sits near 144 from the tomato alone.

Calories Versus Flavor Trade-Offs

Good tomatoes shine with salt and acid. Roast with garlic, then finish with vinegar or lemon. Use a measured splash of olive oil for silky edges. To stretch sauces, add mushrooms or carrots so the pan holds more veg with little extra energy.