Nutrition facts
Calories in a tomato
Raw in a salad or cooked down into sauce, the tomato runs through every kitchen on this site, and its real weight is the one thing nobody looks at.
What a real portion weighs
The Anses table gives values per 100 grams, and 100 grams is not a portion anybody serves. Here are the same values, applied to the portions as they turn up. Weights are in grams, the unit the table is built on. For a quick conversion: 1 oz is about 28 g, and 1 lb is about 454 g.
| Portion | Weight | Energy | Protein | Carbs | Fat | Fiber |
|---|---|---|---|---|---|---|
| One medium round tomato | 120 g | 21 kcal | 0.6 g | 4.1 g | 0 g | 1.2 g |
| One cherry tomato | 15 g | 3 kcal | 0.1 g | 0.5 g | 0 g | 0.2 g |
| The Ciqual reference | 100 g | 18 kcal | 0.5 g | 3.4 g | 0 g | 1 g |
These weights are usual orders of magnitude, not standardized measures: they turn a per-100-gram value into a credible portion. A kitchen scale stays more accurate than any average weight.
Composition per 100 grams
Tomato, round, raw
- Energy
- 18 kcal
- Protein
- 0.5 g
- Carbohydrate
- 3.4 g
- of which sugars
- 3 g
- Fat
- 0 g
- Fiber
- 1 g
- Sodium
- 0 mg
What a table of values does not say
- Water makes almost all of a tomato's weight, and that is what keeps its energy density so low.
- Passata and paste are reduced tomatoes: at equal weight they concentrate everything, and they count as separate ingredients.
- In winter the round tomato loses in taste what a can of chopped tomatoes keeps: canned is not a second choice, it is the same tomato picked ripe.
The Zemiam recipes that use it
These pages carry their calories and their macros, recalculated from the same table as this one. The weight given is that of the ingredient in one serving.
- Lentil salad with tomato and red onion · 80 g per serving
- Homemade burger with oven-roasted potatoes · 40 g per serving
- Homemade chicken kebab with white sauce · 50 g per serving
- Chicken wrap with fresh vegetables · 50 g per serving
- Pan bagnat with tuna · 60 g per serving
- Cheese omelet with tomato and cucumber · 100 g per serving
- Quinoa tabbouleh with tomato and cucumber · 100 g per serving
What comes after the number
How much to eat in a day
A portion means nothing without the day that holds it. A calorie need is worked out from height, weight, age and activity level, then split into protein, carbohydrate and fat.
Calorie calculatorWhere body build sits
Body mass index, the full WHO classification, and the weight range matching a normal build for a given height.
BMI calculatorNeighboring pages
An average weight is an estimate. A photo is not.
In Zemiam, a photo of the meal is enough to log the real portion, with the composition of this same table rather than a guessed figure.
Where the values come from
The composition comes from the Anses Ciqual table: Anses. 2025. Table de composition nutritionnelle des aliments Ciqual, published under Licence Ouverte 2.0. The per-100 g values are reproduced without being altered; the per-portion values are those same values multiplied by a weight, and that weight is not an Anses figure.
The same page in French: Calories de la tomate.