How many calories in
tomato?
Tomatoes are 18 calories per 100g — one of the lightest options in any salad. A whole tomato is around 22 calories. Cooked tomato sauce gets denser per gram, and added oil/sugar in jarred sauces is where the calorie count climbs quickly.
Common serving sizes.
Calories scale with portion. Here's how a typical tomato serving translates in your tracker:
What 18 calories means.
Very low calorie — at 18 kcal per 100g, tomato adds volume to a meal without meaningfully denting a calorie deficit.
Tomato vs. similar foods.
How tomato stacks up on calories and protein against foods people commonly compare it to:
Skip the lookup. Snap the plate.
Point your iPhone camera at tomato and Spotwell's AI estimates the portion and macros in a few seconds. Check it, adjust anything that looks off, and log it.
Download on theApp StoreQuick answers.
How many calories in tomato?
Tomato has approximately 18 calories per 100g. A typical serving — 1 medium (123g) — comes in at 22 calories.
How much protein is in tomato?
0.9g of protein per 100g. That puts tomato at roughly 5.0g of protein per 100 calories — a useful lens when comparing to other vegetables sources.
How do I log tomato accurately?
The simplest method: weigh it on a kitchen scale, then enter grams in your tracker. With Spotwell, you can skip the scale — point the camera at the plate and the AI estimates the portion in a few seconds. Adjust the value if it looks off.
Is tomato good for weight loss?
It depends on your overall calorie target. Tomato is naturally low-calorie at 18 kcal per 100g, so it's easy to fit into a deficit.