Nutrition facts
Calories in coffee
The cup that paces the day and weighs almost nothing in the journal, as long as it stays black: what counts in a coffee is what goes into it.
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 |
|---|---|---|---|---|---|---|
| An espresso · black, no sugar | 40 g | 2 kcal | 0.1 g | 0.5 g | 0 g | 0 g |
| A lungo or americano · black, no sugar | 120 g | 7 kcal | 0.3 g | 1.6 g | 0 g | 0 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
Coffee, non instant no added sugars, ready-to-drink
- Energy
- 6 kcal
- Protein
- 0.3 g
- Carbohydrate
- 1.4 g
- of which sugars
- 0 g
- Fat
- 0 g
- Fiber
- 0 g
- Sodium
- 3 mg
What a table of values does not say
- Black coffee is the closest thing to nothing in this whole collection: the sugar and the milk added to it each have a page of their own, and they are what counts.
- Long or short, the difference is water: the bean gives the same thing to both cups.
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 calculatorAn 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 du café.