Fruits
Lemon nutrition facts
A 1 undetermined wedge yields (6 g) serving of lemon provides 1 calories, 0 g protein, 0 g carbohydrate, and 0 g fat — about 4% of its calories from protein, 89% from carbohydrate, and 7% from fat. The interactive label below toggles between a serving and 100 g.
Calorie split
Vitamins & minerals
Per serving (6 g)
- Vitamin C
- 2.28 mg
- Vitamin E
- 0.01 mg
- Thiamin (B1)
- 0.00 mg
- Riboflavin (B2)
- 0.00 mg
- Niacin (B3)
- 0.01 mg
- Vitamin B6
- 0.00 mg
- Folate (DFE)
- 1.18 mcg
- Magnesium
- 0.35 mg
- Phosphorus
- 0.47 mg
- Zinc
- 0.00 mg
- Copper
- 0.00 mg
- Manganese
- 0.00 mg
- Selenium
- 0.01 mcg
Nutrition highlights
Per 1 undetermined wedge yields (6 g), lemon provides 0 g protein, 0 g carbohydrate, and 0 g fat, with no single vitamin or mineral reaching 10% of the Daily Value.
% of the FDA Daily Value per 1 undetermined wedge yields (6 g) serving.
Key metrics
Nutrient density
Per 100 kcal, lemon delivers about 7% of a Daily Value on average across 22 beneficial nutrients. The score is its percentile for that measure among the 177 foods in our database — higher means more nutrition per calorie. How this is calculated.
- More vitamin C than 94% of foods · 81% of fruits
Density counts protein, fiber, and vitamins and minerals (not fat, sodium, or sugar), each capped so a single nutrient can’t dominate, with a calorie floor so very-low-calorie foods aren’t overstated. It measures nutrition per calorie within our database — a useful guide, not a complete verdict on how “healthy” a food is.
Similar foods & swaps
The closest fruits to lemon by nutrition (per 100 g), and how each differs.
Questions
- How many calories are in lemon?
- A 1 undetermined wedge yields (6 g) serving of lemon has about 1 calories. Per 100 g, it has 22 calories — a very low calorie density.
- How much protein is in lemon?
- Lemon provides about 0 g of protein per 1 undetermined wedge yields (6 g) serving.
- What are the macros in lemon?
- Per serving, lemon has roughly 0 g protein, 0 g carbohydrate, and 0 g fat. By calories, that is 4% protein, 89% carbohydrate, and 7% fat.
- Is lemon high in protein?
- Lemon has a protein density of about 1.6 g per 100 kcal, and 4% of its calories come from protein. Foods above roughly 10 g per 100 kcal are generally considered protein-dense.
- What vitamins and minerals are in lemon?
- Lemon contains small amounts of several vitamins and minerals; see the full label above for the complete micronutrient breakdown.
Use it
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References & methodology
- Data source: U.S. Department of Agriculture, Agricultural Research Service — FoodData Central, FDC ID 167747 (public domain).
- Daily Values: FDA Nutrition Facts label, 2016 update (adults and children aged 4+).
- Source claims: a serving supplying 10–19% of the Daily Value is a “good source”; 20% or more is an “excellent source” (FDA, 21 CFR 101.54).
- Calorie split: Atwater general factors — 4 kcal/g for protein and carbohydrate, 9 kcal/g for fat.
- Last reviewed: June 2026. Values are typical figures and vary with variety, ripeness, and preparation.
NutriFactsHub. “Lemon Nutrition Facts.” https://www.nutrifactshub.com/foods/lemon