Lemon Nutrition Facts
A 100 g serving of lemon contains 29 kcal, 1.1g protein (lime), 0.3g fat (pink) and 9g carbohydrate (blue). It's a good source of fiber, with 2.5g natural sugar. Its other nutrient values are modest — see the full breakdown below.
Core Nutrients per 100 g
PER 100 G SERVINGThe six values MacroDrop shows on every meal card: energy, the three macros, fiber and sugars.
Extended Nutrients
PER 100 G SERVINGGrouped as in the app: lipids, minerals, vitamins and other compounds sit one level below the core six. Daily values follow the FDA 2,000 kcal reference.
Understanding Lemon Nutrition
Lemon is a nutrient-dense fruit prized for its natural sugars, fiber and vitamin content. At 29 kcal per 100 g serving, it provides 1.1g of protein, 9g of carbohydrate and 0.3g of fat. Lemon is particularly rich in vitamin C, delivering 53mg — 59% of the daily value — in a single serving. It's a good source of fiber, with 2.5g natural sugar.
For athletes and anyone tracking macros, lemon is a straightforward source of carbohydrate energy, useful around training for topping up glycogen. Its fiber and micronutrient content makes it a useful addition to a balanced macro split without pulling calories too high.
Frequently Asked Questions
How many calories are in a 100 g serving of lemon?
A 100 g serving of lemon has 29 kcal, 1.1g protein, 0.3g fat and 9g carbohydrate.
How much protein is in lemon?
1.1g per 100 g serving.
Is lemon high in sugar or fiber?
It's a good source of fiber, with 2.5g natural sugar — 2.8g fiber and 2.5g sugar per 100 g serving.
Which nutrients is lemon richest in?
No single micronutrient stands out sharply — see the full breakdown below.
Is lemon good for tracking macros?
For athletes and anyone tracking macros, lemon is a straightforward source of carbohydrate energy, useful around training for topping up glycogen.
Log the lemon in two seconds
MacroDrop tracks all of these nutrients — core and extended — from a photo, your voice or a barcode. Offline USDA database, 7,800 foods.
Values come from the USDA FoodData Central entry Lemons, raw, without peel (FDC ID 167746), per 100 g. Daily values follow the FDA 2,000 kcal reference. Last reviewed August 2026.