Lemon Calories – In Juice & Per Fruit
Lemon is one of the few fruits people rarely eat on its own — but use in almost everything. From water to dressings to baking, lemon juice and zest are everywhere. Yet most people have no idea how many calories they’re actually adding.
⚡ Quick Answer: One medium lemon (58g) has only 17 calories. One tablespoon of lemon juice has 3 calories. Lemon is one of the lowest-calorie ways to add flavor to food and drinks.
📋 This guide covers: Calories per fruit, lemon juice calories, lemon water, lemon zest, nutrition facts, and whether lemon water actually helps with weight loss.
This complete lemon calories guide breaks down every form you use lemons in — so you know exactly what each squeeze, slice, or zest adds to your meal.
Lemon Calories Per Fruit
| Serving | Weight | Calories | Carbs | Fiber |
|---|---|---|---|---|
| Small Lemon | 45g | 12 | 4g | 1.4g |
| Medium Lemon | 58g | 17 | 5g | 1.6g |
| Large Lemon | 84g | 24 | 8g | 2.4g |
| 1 Cup, Sections | 212g | 61 | 20g | 6.5g |
Lemon Juice Calories
| Serving | Weight | Calories | Vitamin C |
|---|---|---|---|
| 1 Teaspoon, Fresh | 5g | 1 | 3mg |
| 1 Tablespoon, Fresh | 15g | 3 | 7mg |
| Juice of 1 Medium Lemon | 47g | 11 | 19mg |
| 1/4 Cup, Fresh | 61g | 14 | 28mg |
| 1/2 Cup, Fresh | 122g | 27 | 56mg |
| 1 Cup, Fresh | 244g | 54 | 112mg |
Lemon Water Calories
| Lemon Water Type | Serving | Calories |
|---|---|---|
| Water + 1 Slice of Lemon | 1 glass | 1-2 |
| Water + Juice of Half Lemon | 1 glass | 6 |
| Water + Juice of Whole Lemon | 1 glass | 11 |
| Store-Bought Lemon Water | 1 bottle (500ml) | 40-80 |
Lemon Nutrition Facts (Medium Lemon, 58g)
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Calories | 17 | — |
| Carbohydrates | 5g | 2% |
| Fiber | 1.6g | 6% |
| Sugar | 1.5g | — |
| Protein | 0.6g | 1% |
| Vitamin C | 31mg | 34% |
| Potassium | 80mg | 2% |
Does Lemon Water Help With Weight Loss?
Lemon water is one of the most talked-about weight loss drinks. Here is the honest breakdown:
- Lemon itself doesn’t burn fat — no fruit or drink has fat-burning properties
- Replacing sugary drinks with lemon water works — swapping a 200-calorie soda for lemon water saves real calories over time
- Hydration itself supports weight management — drinking more water, lemon or not, can reduce hunger signals
- The Vitamin C is a bonus — a glass with whole lemon juice provides 34% of daily Vitamin C for just 11 calories
Lemon Calories FAQ
How many calories are in a lemon?
A medium lemon (58g) has 17 calories, 5g of carbs, and 1.6g of fiber.
How many calories in lemon juice?
One tablespoon of fresh lemon juice has 3 calories. The juice of one whole medium lemon has about 11 calories.
How many calories in lemon water?
Homemade lemon water with juice of half a lemon has about 6 calories. Store-bought versions can have 40-80 calories due to added sugar.
How many calories in 100g of lemon?
100g of lemon has approximately 29 calories.
Does lemon water boost metabolism?
No — lemon has no proven metabolism-boosting effect. Its weight loss benefit comes from replacing higher-calorie drinks, not from any direct fat-burning property.
Want to calculate calories for your Subway order too?
Try Our Free Subway Calories Calculator →* Calorie and nutrition values are approximate and may vary by lemon variety and ripeness.
