How Many Calories Are In A Tomato? | Smart Serving Tips

Tomatoes are naturally low in energy. Most of that juicy weight is water, so the count stays small unless you concentrate them or add fat. The basic reference is 18 calories per 100 grams for raw red fruit. From there, serving size and prep tell the rest of the story.

Tomato Calories Per Size: Cherry To Beefsteak

Weights vary by type, which changes the math. Use the table below for a quick scan across common sizes. These are typical grocery weights; real produce swings a little either way.

Type/Size	Typical Weight	Estimated Calories
Cherry	~17 g each	~3 kcal
Grape	~10 g each	~2 kcal
Roma (Plum)	~62 g each	~11 kcal
Medium Round	~123 g each	~22 kcal
Large Round	~182 g each	~33 kcal
Beefsteak	~300 g each	~54 kcal
One Slice	~20 g	~4 kcal
1 Cup, Chopped	~180 g	~32 kcal

Those estimates come from the 18 kcal per 100 g baseline used in nutrition databases. Once you weigh a serving or eyeball a close match, the calorie math lands quickly. Snacks fit better once you set your daily calorie needs.

What Changes The Count

Water Loss And Concentration

Roasting, air-frying, and dehydrating drive off moisture. The grams go down while sugars and acids stay behind, so calories per 100 g rise even when total calories in the pan don’t. Drying takes this to the limit, which is why sun-dried pieces are far denser than fresh.

Added Fats

Olive oil adds about 120 calories per tablespoon. A drizzle on a sheet pan can nudge a tray of wedges from ultra-light to moderate. Toss lightly, or spray instead of pour if you’re watching totals.

Added Sugars And Starches

Jarred sauces sometimes include sugar or thickeners. Labels tell the story. If the jar lists added sugar, the per-serving number climbs. Simple swap: pick “no added sugar” versions, or simmer your own with garlic and herbs.

Fresh Vs. Products: From Slices To Sauce

Fresh slices and chopped cups pack the crisp bite with minimal energy. Paste is a flavor bomb used by the spoon, not the bowl, since it’s concentrated. Sun-dried pieces land in the middle to high range, especially when packed in oil.

Standard Raw Reference

Nutrition datasets peg raw red tomatoes at 18 kcal per 100 g with about 95% water. See the underlying USDA-based nutrient data for the breakdown, including fiber, potassium, and vitamin C.

Tomato Paste And Sauce

Canned paste sits near 82 kcal per 100 g, while basic canned sauce often falls near the mid-20s per 100 g. That spread comes from water content and solids. If you cook a pan sauce down for longer, it edges higher by weight, even if the pot’s total stays the same.

Sun-Dried And Oil-Packed

Plain dried pieces run a couple hundred calories per 100 g depending on brand and moisture left in the bag. Oil-packed versions include the oil’s energy unless drained well. Portion size matters here: a tablespoon of chopped dried pieces in a salad adds flavor for a small bump.

Serving Math You Can Trust

Use 18 kcal per 100 g for raw red fruit. Multiply by weight in grams and divide by 100. If you don’t have a scale, match a serving from the earlier table. That quick approach lands close to database results without any special tools.

Tomatoes also carry carotenoids like lycopene. They don’t convert to vitamin A, but they add color and show up in diet studies. The NIH carotenoids fact sheet explains how lycopene differs from provitamin A compounds.

Kitchen Forms And Typical Calories

The chart below lines up common forms with practical serving sizes. Use it to plan a salad, pasta night, or a quick snack plate.

Form	Common Serving	Estimated Calories
Raw, Slices	3 slices (~60 g)	~11 kcal
Raw, Chopped	1 cup (~180 g)	~32 kcal
Roasted Halves	150 g (no oil)	~27 kcal
Roasted With Oil	150 g + 1 tsp oil	~49 kcal
Tomato Sauce	1/2 cup (~120 g)	~30 kcal
Tomato Paste	2 tbsp (~32 g)	~26 kcal
Sun-Dried (dry)	2 tbsp (~14 g)	~30 kcal
Sun-Dried, Oil-Packed (drained)	2 tbsp (~14 g)	~40–50 kcal

How To Keep Counts Low Without Losing Flavor

Season Smart

Salt, pepper, garlic, basil, and a splash of vinegar do more for taste than heavy dressings. A light toss with herbs keeps calories in check while sharpening that bright bite.

Use Heat For Sweetness

Roasting at high heat caramelizes edges. If you add oil, keep it measured. A teaspoon spreads well on a parchment-lined sheet if you use a brush or sprayer.

Build Sauces The Light Way

Start with canned crushed fruit and simmer with onion, garlic, and a bay leaf. Skip sugar. If you need body, stir in a teaspoon of paste at the end instead of a second glug of oil.

Nutrients Beyond Calories

Tomatoes bring fiber and potassium with a small energy load. Vitamin C sits in a friendly range per cup, and that lycopene pigment adds color depth. Raw and cooked both fit; cooking can help release some carotenoids while raw servings bring crisp texture. For raw reference values and minerals, see the same USDA-based raw tomato data.

Quick Portion Examples You Can Use Tonight

Snack Plate

Ten cherry pieces with a pinch of flaky salt land near 30 calories. Add cucumber, a few olives, and a squeeze of lemon for a crunchy plate that takes minutes.

Sandwich Stack

Four slices add around 16 calories and a juicy layer. Toast the bread and keep spreads measured. Mustard gives a big lift without moving the number much.

Simple Pasta

Stir 1/2 cup of sauce into hot noodles and finish with fresh basil. If you want extra depth, blend in one tablespoon of paste for about 13 extra calories plus bold flavor.

Buying, Storing, And Saving Waste

Pick firm fruit with smooth skin. Keep them at room temp for peak flavor, then shift ripe ones to the fridge for a short stay to slow softening. The USDA’s produce guide lists basic tips on selection and storage for home cooks.

Troubleshooting Your Numbers

The Counts Don’t Match My App

Different apps use different datasets and serving assumptions. If a scan looks off, switch to the gram weight method. Weigh the food, multiply by the 18-per-100 baseline for fresh, or check the jar for products.

Restaurant Dishes Feel Higher

Kitchens use oil to carry flavor and help browning. That’s standard. Ask for sauce on the side, skip the extra oil finish, or choose dishes with fresh wedges and herbs.

I Need A Lower-Energy Spread

Blend canned crushed fruit with a little paste, roasted garlic, and chili flakes. Spread on toast or flatbread. Big flavor, modest numbers.

Putting It All Together

Fresh servings stay light, products vary with concentration, and add-ins change the picture fast. Once you learn the baseline and a few typical weights, you can plan meals without a calculator.

Want a step-by-step walkthrough? Try our calories and weight loss guide.