Calories in Limes: Nutrition Facts & Serving Sizes
Per 1 fruit (2" dia) (67g)
Per 100g
Source: USDA FoodData Central, SR Legacy, March 2026.
One lime (67g) contains just 20 calories, making it a negligible addition to meals and drinks. Per 100g, limes provide 30 calories, 0.7g of protein, 10.5g of carbs (including 2.8g of fiber), and only 0.2g of fat. The primary nutrient in lime is vitamin C at 29.1mg per 100g, covering about 32% of the daily requirement. One whole lime provides about 19.5mg of vitamin C. Limes are closely related to lemons and share similar nutritional properties but have a distinctly tart, tropical flavor. Lime juice is a staple in Mexican, Asian, and Caribbean cooking, and is commonly used in cocktails and marinades. The citric acid in lime juice helps tenderize meat and enhances flavor without adding significant calories. Like lemons, limes are essentially calorie-free when used as a flavoring. Lime zest (the outer peel) contains aromatic compounds called limonoids that have been studied for antioxidant properties. The low sugar content of just 1.7g per 100g makes lime very suitable for low-carb and keto diets.
Nutrition Highlights
Calories by Serving Size
| Serving | Cal | Protein | Carbs | Fat | Fiber |
|---|---|---|---|---|---|
| 1 fruit (2" dia) (67g) | 20.1 | 0.5g | 7g | 0.1g | 1.9g |
| 1 serving (67g) | 20.1 | 0.5g | 7g | 0.1g | 1.9g |
| 100g | 30 | 0.7g | 10.5g | 0.2g | 2.8g |
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Full Nutrition Facts (per 100g)
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Calories | 30 | 2% |
| Protein | 0.7g | 1% |
| Total Fat | 0.2g | |
| Total Carbohydrates | 10.5g | 4% |
| Dietary Fiber | 2.8g | 10% |
| Sugars | 1.7g | 3% |
| Sodium | 2mg |
Vitamins & Minerals (per 100g)
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Calcium | 33mg | 3% |
| Iron | 0.6mg | 3% |
| Potassium | 102mg | 2% |
| Vitamin A | 2mcg | 0% |
| Vitamin C | 29.1mg | 32% |
| Magnesium | 6mg | 1% |
| Phosphorus | 18mg | 1% |
| Zinc | 0.1mg | 1% |
| Selenium | 0.4mcg | 1% |
| Folate | 8mcg | 2% |
| Niacin (B3) | 0.2mg | 1% |
% Daily Values based on a 2,000 calorie diet (FDA reference).
Health Benefits of Limes
Lime is a zero-calorie-impact flavoring that provides meaningful vitamin C. At 29.1mg per 100g, lime is a solid vitamin C source. A single lime provides about 19.5mg, contributing to the 65 to 90mg daily requirement for adults. Vitamin C supports immune function, collagen production, and iron absorption from plant foods.
The citric acid in lime juice has the same kidney stone prevention properties as lemon juice. Citrate binds to calcium in urine and prevents the formation of calcium oxalate crystals. For anyone prone to kidney stones, regular lime juice consumption is recommended by urologists.
Lime juice can improve the digestibility and safety of foods. The acidity denatures some surface bacteria on meat and fish, which is why lime juice marinades are used in ceviche preparations. While not a substitute for cooking, the acidity does have practical antibacterial effects.
For cocktails and mixed drinks, lime juice adds flavor with minimal calorie impact. Using fresh lime juice instead of sweetened lime mixers saves significant sugar. Fresh lime juice has about 25 to 30 calories per 100ml versus 100 to 200 calories in commercial lime-flavored sweetened mixers.
Lime zest contains limonoids, flavonoids, and essential oils that function as antioxidants and have been studied for potential anti-inflammatory effects. The beneficial compounds are most concentrated in the peel.
Dietary Considerations
Lime is naturally gluten-free, vegan, dairy-free, and keto-friendly at just 10.5g of carbs per 100g with 2.8g of fiber (net carbs of 7.7g per 100g). As a whole fruit, it is low in carbs. As a juice or flavoring, it is essentially calorie and carb free. Lime is excellent for weight loss as a flavor enhancer that replaces high-calorie sauces and dressings. No significant allergens. The acidity of lime juice can erode tooth enamel with excessive daily consumption. Rinse mouth with water after drinking lime juice.
Daily Intake (100g)
100g of lime provides 2% of a 2,000-calorie diet.
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Frequently Asked Questions
How many calories in a lime?
One lime (67g) contains 20 calories. Per 100g, limes have 30 calories. When used as juice or flavoring, limes add negligible calories to meals and drinks. Fresh lime juice squeezed into water or over food contributes fewer than 5 calories in typical serving amounts.
Is lime good for weight loss?
Yes, lime is great for weight loss as a flavoring agent. It adds flavor with virtually zero calories, making food more enjoyable without impacting your calorie budget. Adding lime juice to water enhances palatability and can encourage better hydration throughout the day.
How much vitamin C is in a lime?
One lime (67g) provides about 19.5mg of vitamin C. Per 100g, limes contain 29.1mg of vitamin C, covering about 32% of the daily requirement. Vitamin C supports immune function, collagen synthesis, and enhances non-heme iron absorption.
Is lime keto-friendly?
Yes, lime is keto-friendly when used as a juice or flavoring. Squeezed lime juice in cocktails or over food contributes minimal carbs. As a whole fruit, one lime has 7g of carbs and 1.9g of fiber, making it acceptable in small amounts on a keto diet.
What is the difference between lime and lemon?
Limes have 30 calories per 100g and lemons have 29 calories per 100g. Lemons have more vitamin C (53mg per 100g) than limes (29.1mg per 100g). Both have similar citric acid content and nutritional profiles. Flavor-wise, limes are more tart and tropical, while lemons are more sour and bright.
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