Lemon nutrition facts

Lemon (1 fruit (2-1/8" dia), 58 g) has 17 calories, 0.6 g protein, 1.6 g fiber, 0.2 g fat. It is an excellent source of vitamin C (34% DV).

Vitamin C 34% DV Fiber 5.8% DV Vitamin B6 2.7% DV Copper 2.4% DVPantothenic acid 2.2% DV

#15 of 50 fruits for vitamin C #26 of 39 fruits for omega-3 #28 of 44 fruits for selenium #30 of 50 fruits for calcium #33 of 50 fruits for iron #33 of 50 fruits for folate

Nutrition Facts

Serving size1 fruit (2-1/8" dia) (58 g)

Calories17

Total Fat 0.2g0.2%

Saturated Fat 0g0.1%

Trans Fat 0g

Cholesterol 0mg0%

Sodium 1mg0.1%

Total Carbohydrate 5.4g2%

Dietary Fiber 1.6g5.8%

Total Sugars 1.4g

Protein 0.6g1.3%

Vitamin D 0µg0%

Calcium 15mg1.2%

Iron 0.3mg1.9%

Potassium 80mg1.7%

* The % Daily Value (DV) tells you how much a nutrient in a serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice. Values from USDA FoodData Central; label rounding rules are not applied.

Calorie breakdown

■ Protein 10%
■ Fat 6%
■ Carbohydrate 84%

Share of calories by the 4-9-4 Atwater factors; the centre shows USDA's calorie value.

Scores

163

Nutrient density (NRF9.3)

Nine nutrients to encourage minus three to limit, per 100 kcal. Whole foods range from about −60 to 600; leafy greens score highest.

-0.7

Inflammatory profile strongly anti-inflammatory

Lower is more anti-inflammatory. Percentile 17 among 1,677 whole foods, from Dietary Inflammatory Index weights applied to this food's nutrients per 100 kcal.

All nutrients in lemon

Nutrient	Per 1 fruit (2-1/8" dia)	% Daily Value
Macronutrients
Calories	17 kcal	0.8%
Protein	0.6 g	1.3%
Total fat	0.2 g	0.2%
Carbohydrate	5.4 g	2%
Fiber	1.6 g	5.8%
Sugars	1.4 g	no DV
Fats
Saturated fat	0 g	0.1%
Trans fat	0 g	no DV
Monounsaturated fat	0 g	no DV
Polyunsaturated fat	0.1 g	no DV
Omega-3 (ALA+EPA+DHA)	0.02 g	no DV
Omega-6 (linoleic)	0.04 g	no DV
Cholesterol	0 mg	0%
Vitamins
Vitamin C	30.7 mg	34%
Thiamin (B1)	0.02 mg	1.9%
Riboflavin (B2)	0.01 mg	0.9%
Niacin (B3)	0.1 mg	0.4%
Pantothenic acid (B5)	0.11 mg	2.2%
Vitamin B6	0.05 mg	2.7%
Folate (DFE)	6 µg	1.6%
Vitamin B12	0 µg	0%
Vitamin A (RAE)	1 µg	0.1%
Vitamin E	0.09 mg	0.6%
Vitamin D	0 µg	0%
Vitamin K	0 µg	0%
Choline	3 mg	0.5%
Minerals
Sodium	1 mg	0.1%
Calcium	15 mg	1.2%
Iron	0.3 mg	1.9%
Magnesium	5 mg	1.1%
Phosphorus	9 mg	0.7%
Potassium	80 mg	1.7%
Zinc	0 mg	0.3%
Copper	0.02 mg	2.4%
Manganese	0.02 mg	0.8%
Selenium	0.2 µg	0.4%
Carotenoids
Beta-carotene	2 µg	no DV
Lycopene	0 µg	no DV
Lutein + zeaxanthin	6 µg	no DV
Other
Caffeine	0 mg	no DV
Water	52 g	no DV

Nutrient	Per 100 g	% Daily Value
Macronutrients
Calories	29 kcal	1.5%
Protein	1.1 g	2.2%
Total fat	0.3 g	0.4%
Carbohydrate	9.3 g	3.4%
Fiber	2.8 g	10%
Sugars	2.5 g	no DV
Fats
Saturated fat	0 g	0.2%
Trans fat	0 g	no DV
Monounsaturated fat	0 g	no DV
Polyunsaturated fat	0.1 g	no DV
Omega-3 (ALA+EPA+DHA)	0.03 g	no DV
Omega-6 (linoleic)	0.06 g	no DV
Cholesterol	0 mg	0%
Vitamins
Vitamin C	53 mg	59%
Thiamin (B1)	0.04 mg	3.3%
Riboflavin (B2)	0.02 mg	1.5%
Niacin (B3)	0.1 mg	0.6%
Pantothenic acid (B5)	0.19 mg	3.8%
Vitamin B6	0.08 mg	4.7%
Folate (DFE)	11 µg	2.8%
Vitamin B12	0 µg	0%
Vitamin A (RAE)	1 µg	0.1%
Vitamin E	0.15 mg	1%
Vitamin D	0 µg	0%
Vitamin K	0 µg	0%
Choline	5 mg	0.9%
Minerals
Sodium	2 mg	0.1%
Calcium	26 mg	2%
Iron	0.6 mg	3.3%
Magnesium	8 mg	1.9%
Phosphorus	16 mg	1.3%
Potassium	138 mg	2.9%
Zinc	0.1 mg	0.5%
Copper	0.04 mg	4.1%
Manganese	0.03 mg	1.3%
Selenium	0.4 µg	0.7%
Carotenoids
Beta-carotene	3 µg	no DV
Lycopene	0 µg	no DV
Lutein + zeaxanthin	11 µg	no DV
Other
Caffeine	0 mg	no DV
Water	89 g	no DV

Nutrient	Per 1 oz (28 g)	% Daily Value
Macronutrients
Calories	8 kcal	0.4%
Protein	0.3 g	0.6%
Total fat	0.1 g	0.1%
Carbohydrate	2.6 g	1%
Fiber	0.8 g	2.8%
Sugars	0.7 g	no DV
Fats
Saturated fat	0 g	0.1%
Trans fat	0 g	no DV
Monounsaturated fat	0 g	no DV
Polyunsaturated fat	0 g	no DV
Omega-3 (ALA+EPA+DHA)	0.01 g	no DV
Omega-6 (linoleic)	0.02 g	no DV
Cholesterol	0 mg	0%
Vitamins
Vitamin C	15 mg	17%
Thiamin (B1)	0.01 mg	0.9%
Riboflavin (B2)	0.01 mg	0.4%
Niacin (B3)	0 mg	0.2%
Pantothenic acid (B5)	0.05 mg	1.1%
Vitamin B6	0.02 mg	1.3%
Folate (DFE)	3 µg	0.8%
Vitamin B12	0 µg	0%
Vitamin A (RAE)	0 µg	0%
Vitamin E	0.04 mg	0.3%
Vitamin D	0 µg	0%
Vitamin K	0 µg	0%
Choline	1 mg	0.3%
Minerals
Sodium	1 mg	0%
Calcium	7 mg	0.6%
Iron	0.2 mg	0.9%
Magnesium	2 mg	0.5%
Phosphorus	5 mg	0.4%
Potassium	39 mg	0.8%
Zinc	0 mg	0.2%
Copper	0.01 mg	1.2%
Manganese	0.01 mg	0.4%
Selenium	0.1 µg	0.2%
Carotenoids
Beta-carotene	1 µg	no DV
Lycopene	0 µg	no DV
Lutein + zeaxanthin	3 µg	no DV
Other
Caffeine	0 mg	no DV
Water	25 g	no DV

Missing nutrients were not analysed by USDA for this food; they are not zero. F marks a value updated from Foundation Foods (April 2026 analytical data). Source: USDA FoodData Central #167746 ("Lemons, raw, without peel").

Lemon variants compared

Per 100 g, so preparations can be compared directly.

Variant	kcal	Protein g	Fat g	Carbs g	Fiber g	Sugars g	Potassium mg	Vit C mg	Sodium mg
Lemon (this page)	29	1.1	0.3	9.3	2.8	2.5	138	53	2
Lemon juice	22	0.3	0.2	6.9	0.3	2.5	103	38.7	1

Frequently asked questions

How many calories are in lemon?

Lemon has 17 calories per 1 fruit (2-1/8" dia) (58 g), or 29 calories per 100 g, according to USDA FoodData Central.

How much protein is in lemon?

0.6 g of protein per 1 fruit (2-1/8" dia), which is 1.3% of the 50 g Daily Value.

What is lemon rich in?

Per serving, lemon is richest in Vitamin C at 34% of the Daily Value, Fiber (5.8%), Vitamin B6 (2.7%), Copper (2.4%).

Is lemon healthy?

By nutrient density, lemon scores 163 on the NRF9.3 index (nine nutrients to encourage minus three to limit, per 100 kcal). Its nutrient profile is strongly anti-inflammatory compared with other whole foods. See the methodology page for how both scores work; this is data, not medical advice.

More fruits

Nutrient values are from USDA FoodData Central (SR Legacy, April 2018; Foundation Foods, April 2026) and shown per serving as described on each page. %DV uses the FDA Daily Values for adults and children aged 4 and over. This is nutrition data for general information, not medical or dietary advice; talk to a clinician or registered dietitian about your own needs. How the numbers are calculated.