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How Many Calories in Lemon?
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Quick reference — common serving sizes
| Amount | Calories | Protein |
|---|---|---|
| 1 oz (28g) | 8 kcal | 0.3g |
| 100g | 29 kcal | 1.1g |
| 1 lemon | 61 kcal | 2.3g |
A lemon contains 29 calories per 100g. A typical 1 lemon (212g) provides about 61 calories. Lemon is low in calories. Accurate tracking starts with weighing portions — a digital kitchen scale removes all the guesswork.
Lemon Nutrition Facts
| Nutrient | Per 100g | Per serving (212g) |
|---|---|---|
| Calories | 29 kcal | 61 kcal |
| Protein | 1.1g | 2.3g |
| Carbohydrates | 9.3g | 19.7g |
| of which Sugars | 2.5g | 5.3g |
| Fat | 0.3g | 0.6g |
| of which Saturates | 0.0g | 0.0g |
| Fibre | 2.8g | 5.9g |
| Sodium | 2.0mg | 4mg |
| Potassium | 138.0mg | 293mg |
| Calcium | 26.0mg | 55mg |
| Iron | 0.6mg | 1.3mg |
| Vitamin C | 53.0mg | 112.4mg |
| Vitamin A | 1.0µg | 2µg |
| Selenium | 0.4µg | 1µg |
| Riboflavin (B2) | 0.0mg | 0.0mg |
% of Daily Value (per 100g)
Based on a standard 2,000-calorie reference diet — the same basis used on nutrition labels in the US and UK.
- A good source of fibre (10% DV)
- Low in saturated fat (0% DV)
- Low in sodium (0% DV)
- High in vitamin C (59% DV) — an excellent source
- Calories: 1% DV
- Protein: 2% DV
- Carbohydrates: 3% DV
- Fibre: 10% DV
- Fat: 0% DV
- Saturated fat: 0% DV
- Sodium: 0% DV
- Potassium: 3% DV
- Calcium: 2% DV
- Iron: 3% DV
- Vitamin C: 59% DV
- Vitamin A: 0% DV
- Selenium: 1% DV
- Riboflavin (B2): 0% DV
Useful for tracking lemon
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Have a cat or dog? Check whether lemon is safe for your dog or safe for your cat before sharing. Also check the full ingredient breakdown and food safety guide for pregnancy and storage advice. Use a meal prep container set to portion out lemon for the week. Tracking supplements too? Check drug and supplement interactions before combining anything new.
Good to know
Ripeness affects sugar content — a very ripe piece of fruit can carry noticeably more natural sugar than an under-ripe one of the same size.
Does lemon fit your diet?
Weight management
At 29 calories per 100g, lemon is calorie-light relative to its volume, which can help keep a meal within a calorie target without needing very small portions.
Frequently Asked Questions
How many calories in lemon per 100g?
Lemon contains 29 calories per 100g, based on USDA reference data.
Is lemon high in calories?
A 1 lemon of lemon (212g) has around 61 calories — roughly 3% of a 2,000-calorie daily intake.
Is lemon good for weight loss?
At 29 calories per 100g, lemon is relatively low in calories and can fit well into a weight-loss diet. A 1 lemon provides about 61 calories.
How much protein is in lemon?
Lemon contains 1.1g of protein per 100g.
Is lemon a good source of fibre?
Lemon is relatively low in fibre at 2.8g per 100g, so pairing it with fibre-rich sides (vegetables, whole grains, legumes) can help balance a meal.
How does lemon compare to pears, canned, water pack, solids and liquids?
Lemon has 29 calories per 100g, close to pears, canned, water pack, solids and liquids at 29 — 0 calories fewer per 100g. See the full macro breakdown above.
How many servings of lemon for 20g of protein?
With 1.1g of protein per 100g, you'd need roughly 1818g of lemon to reach 20g of protein
Foods with a similar calorie count
Other fruits closest to lemon by calories per 100g:
| Food | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Lemon (this page) | 29 kcal | 1.1g | 9.3g | 0.3g |
| Pears, Canned, Water Pack, Solids and Liquids | 29 kcal | 0.2g | 7.8g | 0.0g |
| Fruit Salad, (peach and Pear and Apricot and Pineapple and Cherry), Canned, Water Pack | 30 kcal | 0.3g | 7.9g | 0.1g |
| Grapefruit, Raw, Pink and Red, Florida | 30 kcal | 0.6g | 7.5g | 0.1g |
| Limes, Raw | 30 kcal | 0.7g | 10.5g | 0.2g |
| Melons, Casaba, Raw | 28 kcal | 1.1g | 6.6g | 0.1g |
| Oheloberries, Raw | 28 kcal | 0.4g | 6.8g | 0.2g |
More kit for lemon tracking
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Nutrition data: USDA FoodData Central (public domain, CC0 1.0). Values are per 100g unless stated.