Star Fruit Calories & Nutrition Calculator

Star fruit has just 31 kcal per 100g — comparable to watermelon (30 kcal) and strawberry (32 kcal), and lower than papaya (43 kcal) and peach (39 kcal). At 91% water content, it is one of the most water-dense fruits. A medium star fruit (91g) has only 28 kcal — less than half a medium banana ^[1].

The ultra-low calorie count comes from minimal sugar: 3.98g per 100g. Compare this to apple (10.4g), banana (12.2g), and grape (15.5g). Star fruit has 3-4x less sugar than most common fruits. Total carbohydrates at 6.73g are also remarkably low.

For food journaling, star fruit is one of the most volume-efficient fruits. Two large star fruits (248g) total only 77 kcal — less than a single medium banana. The visual and physical volume of food far exceeds what the calorie count would suggest.

Star fruit provides 1.04g protein per 100g — a number that seems unremarkable until you consider the calorie cost. At 31 kcal, star fruit delivers 0.034g protein per calorie — more efficient than banana (0.012g/kcal), apple (0.005g/kcal), and mango (0.014g/kcal) ^[1][2].

Among common fruits, only guava (2.55g protein at 68 kcal = 0.037g/kcal) has a better protein-per-calorie ratio. Star fruit's protein percentage of calories is 13% — unusually high for a fruit, where most deliver 2-5% of calories from protein.

For food journaling, star fruit's protein contribution is modest in absolute terms (1.04g per 100g) but exceptional relative to its calorie cost. A cup of sliced star fruit (108g) provides 1.1g protein at just 33 kcal — essentially 'free' protein in a food journal.

Star fruit provides 34.4mg vitamin C per 100g (38% DV). While the absolute amount is less than orange (53.2mg), the vitamin C per calorie is vastly superior: 1.11mg vitamin C per calorie vs orange's 1.13mg/kcal — nearly identical efficiency ^[1][2].

A medium star fruit (91g) delivers 31mg vitamin C (35% DV) at just 28 kcal. A cup of sliced star fruit (108g) provides 37mg (41% DV) at 33 kcal. Two medium star fruits cover nearly 70% DV of vitamin C at only 56 kcal.

For food journaling, star fruit is one of the most vitamin C-efficient fruits by calorie. If tracking vitamin C on a calorie budget, star fruit provides more vitamin C per calorie than most fruits including orange, mango, and pineapple.

Star fruit delivers 2.8g fiber per 100g (10% DV) at just 31 kcal — a fiber-per-calorie ratio of 0.090g/kcal. Among common fruits, only raspberry (0.125g/kcal) has a better fiber-per-calorie ratio. Star fruit surpasses strawberry (0.063g/kcal), pear (0.054g/kcal), and apple (0.046g/kcal) ^[1].

A cup of sliced star fruit (108g) provides 3.0g fiber (11% DV) at 33 kcal. Two medium star fruits (182g) deliver 5.1g fiber (18% DV) at 56 kcal. For context, getting 5g fiber from banana requires eating two medium bananas at 210 kcal.

For food journaling, star fruit is the best fiber-per-calorie fruit choice. The 2.8g fiber comes with only 3.98g sugar, giving a fiber-to-sugar ratio of 0.70:1 — far better than apple (0.23:1), banana (0.21:1), or mango (0.12:1).

Star fruit is 100% edible — the thin, waxy skin, the flesh, and the star-shaped points are all consumed. Only the tiny seeds (if present) are sometimes removed but are technically edible. This makes star fruit unique among tropical fruits, which typically have significant inedible portions ^[1][3].

Compare the edible yield: rambutan 45%, pomegranate 52%, soursop 32%, mango 65%, banana 64%, pineapple 51% (core + skin removed). Star fruit's 100% edibility means the purchased weight equals the consumed weight — no waste in food journaling calculations.

For food journaling, star fruit simplifies logging: weigh the whole fruit and log it directly. A medium star fruit weighing 91g provides exactly 91g of edible food. No adjustments needed for peel, pit, rind, or seeds — a rare convenience among tropical fruits.