Calories in Finger Lime: Nutritional facts for Finger Lime Types

One hundred grams (3.5 oz) of the edible portion of raw finger lime contains 30 calories.

One kilogram (1,000 g) of the edible portion of raw finger lime provides 300 calories.

One single large whole finger lime weighing 20 g (0.7 oz) contains 6 calories. One medium whole finger lime fruit weighing 15 g (0.5 oz) contains 4.5 calories. One small whole finger lime fruit weighing 10 g (0.35 oz) contains 3 calories.

Finger lime provides some health benefits like potent antioxidant protection and enhanced immune response due to its high concentration of Vitamin C and anthocyanin pigments. This unique citrus fruit, known globally as "caviar lime," is highly prized in modern gastronomy and wellness circles. A list of the health benefits of finger lime are shown below.

• Combats Oxidative Stress: The red and pink varieties contain dense anthocyanins that neutralize cellular free radicals. A study by Netzel et al. (2007), "Native Australian fruits — a novel source of antioxidants for food," demonstrated that the specific phenolic compounds in finger limes yield a highly potent free radical scavenging capacity that protects against tissue aging.
• Boosts Immune Defense: High Vitamin C levels stimulate the production and efficacy of white blood cells to fight infections.
• Enhances Skin Elasticity: Vitamin C is vital for collagen synthesis, preventing premature skin degradation and wrinkle formation.
• Supports Iron Absorption: The high citric acid and Vitamin C content naturally enhance the gastrointestinal absorption of plant-based iron from other foods.
• Promotes Digestive Health: The dietary fiber found in the cellular walls of the juice pearls prevents constipation and feeds beneficial gut bacteria.
• Protects Cardiovascular Function: Potassium dilates blood vessels, easing blood pressure and reducing strain on the heart.

Finger lime has been known to cause some unwanted effects like dental enamel erosion and gastric irritation due to its extreme acidity and low pH levels. A list of the downsides of finger lime are shown below.

• Promotes Dental Decay: The high concentration of citric acid softens tooth enamel, leading to cavities if the mouth is not rinsed with water after consumption.
• Triggers Acid Reflux: The intense acidity relaxes the lower esophageal sphincter, causing severe heartburn or gastroesophageal reflux disease (GERD) flare-ups.
• Causes Skin Irritation: The essential oils in the fruit's rind cause phytophotodermatitis, a condition where the skin blisters painfully when exposed to sunlight after handling the peel.

Yes, finger limes are good for you because they deliver 32% of the DV for Vitamin C and 10% of the DV for dietary fiber in a low-calorie 100 g (3.5 oz) serving. Healthy individuals should consume 20 g (1 large fruit) daily to gain the best antioxidant benefits without overexposing the stomach to extreme acidity. A study by Netzel et al. (2007), "Native Australian fruits — a novel source of antioxidants for food," confirms that these native citrus fruits serve as a powerful functional food source for systemic cellular health. They are a highly nutritious, zero-fat culinary garnish that supports robust systemic immunity.

The calories in finger limes change based on the natural sugar accumulation and water density of the specific cultivar. The standard Alstonville and Crystal varieties contain 30 and 28 calories per 100 g (3.5 oz) respectively due to their high water and citric acid content. If the fruit is a pigmented variety like Pink Ice or Crimson Tide, the energy increases to 31 and 32 calories per 100 g (3.5 oz) because the development of dark anthocyanin pigments correlates with a slight increase in naturally stored fructose.

The origin of the finger lime (Citrus australasica) is the subtropical rainforests of the coastal border region between Queensland and New South Wales, Australia. Indigenous Australian populations foraged the fruit for thousands of years, utilizing it both as a food source and as a traditional medicine to ward off disease. Following European colonization, massive tracts of its native habitat were destroyed for agriculture. In the late 20th century, gourmet chefs "rediscovered" the fruit, propelling it from an obscure bush tucker ingredient into a highly lucrative, globally cultivated luxury crop.