Lemon: Calories, Nutrition & Healthier Swaps
29 kcal per 100 g · Nutri-Score A
sugar: low saturated fat: low salt: low fiber: low
Nobody eats lemons by the pound; their value is flavor without calories — juice and zest can stand in for salt and sugar in dressings.
Lemon nutrition facts per 100 g and per serving
| Nutrient | Per 100 g | Serving: slice for tea, 10 g |
|---|---|---|
| Calories | 29 kcal | 2.9 kcal |
| Protein | 0.9 g | 0.1 g |
| Fat | 0.1 g | 0 g |
| incl. saturated | 0 g | 0 g |
| Carbohydrates | 6.5 g | 0.7 g |
| incl. sugars | 2.5 g | 0.3 g |
| Fiber | 2.8 g | 0.3 g |
| Salt | 0 g | 0 g |
Values per 100 g as eaten, averaged from food composition tables (USDA FoodData Central and others) and rounded — a specific brand or recipe will differ a little.
Lemon: nutrition highlights
It's light: 29 kcal per 100 g, so even a big serving barely moves your daily total.
On the open Nutri-Score algorithm, lemon gets an A: one of the better picks in its category. The score weighs calories, sugar, saturated fat and salt against protein, fiber and the share of fruit, vegetables, legumes and nuts.
What to watch
- No red flags on the traffic light: sugar, salt and saturated fat per 100 g are all within the low-to-medium range.
How much movement is one serving?
One serving (slice for tea, 10 g) is 2.9 kcal — roughly 1 min of easy walking or 0 min of cycling for a 70 kg (154 lb) person. In the diary, minutes are worked out for your weight and the activities you actually do.
Healthier swaps for Lemon
There's no swap in our base that is clearly better at the same calories — lemon is already one of the better choices in its category.
More in fruit & berries
AppleBananaOrangeGrapesPearKiwiWatermelonPineappleMangoPomegranate