Lemon
29 kcal per 100g
Lemon has 29 kcal per 100 g, and 1 lemon (58 g) comes to about 17 kcal, with 0.6 g protein, 5.4 g carbs and 0.2 g fat.
Kairo logs Lemon from a photo: the app estimates the portion on the plate and fills in calories and macros from reference data, no typing needed.
Your portion
Type the grams or the calorie budget you have left.
- 1.1 g
- Protein
- 9.3 g
- Carbs
- 0.3 g
- Fat
100 g ≈ 1 % of a 2,000 kcal reference intake. Work out your own daily need
Nutrition Facts
Serving size: 100g
Health Info
Lemons are very low in sugar for a fruit and exceptionally high in vitamin C. The citric acid in lemon juice can enhance non-heme iron absorption from plant foods and is used to brighten dishes without added salt.
Macros per 100g
Values per 100 g are based on recognised nutrition reference data. Last reviewed: June 2026. View sources
Track Lemon in Kairo
Just photograph it. Kairo's AI reads the portion and the nutrition. Three seconds later the calories and macros are in your log, no typing.
Get Kairo on the App StoreFrequently Asked Questions
- How many calories are in Lemon?
- Lemon has 29 kcal per 100 g. A typical 58 g serving contains about 17 kcal.
- How much protein is in Lemon?
- Lemon provides 1.1 g of protein per 100 g.
- How many carbs are in Lemon?
- Lemon contains 9.3 g of carbohydrates per 100 g, of which 2.5 g is sugar.
- How much fat is in Lemon?
- Lemon contains 0.3 g of fat per 100 g. It also provides 2.8 g of fiber per 100 g.
- Is Lemon good for weight loss?
- With only 29 kcal per 100 g, Lemon is low in calories and fits easily into a weight-loss diet.
- Can I log Lemon in Kairo from a photo?
- Yes, photograph the plate and Kairo estimates the portion of Lemon, then logs calories and macros from reference data. If the portion looks off, you can adjust the grams and the numbers update.