How much protein is in pineapple?

Pineapple has 0.5 g of protein per 100 g and 0.8 g per 1 cup, chunks (165 g). That is 1 g of protein per 100 kcal — essentially not a protein source.

Where do these calorie figures come from?

USDA FoodData Central record 169124, “Pineapple, raw, all varieties” (SR Legacy, FDC SR Legacy 2018-04 + FNDDS 2024-10-31). Energy is USDA nutrient 1008 (Energy, kcal); protein, fat and carbohydrate are read from the same record. USDA data is in the public domain, and the FDC ID above links straight to it.

All foods

Oranges, mango, pineapple and moreUSDA SR LegacyFDC 169124

Calories in pineapple

USDA FoodData Central record for “Pineapple, raw, all varieties” — per 100 g, per every USDA serving size, and next to the other oranges, mango, pineapple and more rows.

The short answer

Pineapple: 50 kcal per 100 g. 1 cup, chunks (165 g) is 83 kcal with 0.8 g of protein. Source: USDA FoodData Central record 169124, "Pineapple, raw, all varieties".

Per 100 g

Nutrient	Per 100 g	Share of energy
Energy	50 kcal	100%
Protein	0.5 g	4%
Fat	0.1 g	2%
Carbohydrate	13.1 g	95%

Pineapple is 50 kcal per 100 g in USDA FoodData Central (SR Legacy). Of that energy, about 4% comes from protein, 2% from fat and 95% from carbohydrate. That works out to 1 g of protein per 100 kcal — essentially not a protein source.

Per serving

The serving sizes USDA lists for this record, priced from the per-100 g figures above. Nothing here is rounded to a “portion” — the gram weight next to each label is what the calories are computed from.

Serving	Weight	Calories	Protein	Fat	Carbs
100 g	100 g	50	0.5 g	0.1 g	13.1 g
1 cup, chunks	165 g	83	0.8 g	0.2 g	21.6 g
1 fruit	905 g	453	4.5 g	0.9 g	118.6 g
1 slice (4-2/3" dia x 3/4" thick)	166 g	83	0.8 g	0.2 g	21.7 g
1 slice (3-1/2" dia x 3/4" thick)	84 g	42	0.4 g	0.1 g	11 g
1 slice, thin (3-1/2" dia x 1/2" thick)	56 g	28	0.3 g	0.1 g	7.3 g

Compared with other oranges, mango, pineapple and more

Food	kcal / 100 g	Protein / 100 g	Per serving
An orange	47	0.9 g	86 kcal · 1 large (3-1/16" dia)
A mango	60	0.8 g	202 kcal · 1 fruit without refuse
Pineapple	50	0.5 g	83 kcal · 1 cup, chunks
Watermelon	30	0.6 g	46 kcal · 1 cup, diced
A kiwi	61	1.1 g	42 kcal · 1 fruit (2" dia)
A pear	57	0.4 g	101 kcal · 1 medium
Medjool dates	277	1.8 g	66 kcal · 1 date, pitted

Other tables in fruits and fruit juices

The same numbers for the foods this one usually shares a plate — or a shopping list — with.

Questions about pineapple

How many calories are in pineapple?: Pineapple: 50 kcal per 100 g. 1 cup, chunks (165 g) is 83 kcal with 0.8 g of protein. Source: USDA FoodData Central record 169124, "Pineapple, raw, all varieties".
How much protein is in pineapple?: Pineapple has 0.5 g of protein per 100 g and 0.8 g per 1 cup, chunks (165 g). That is 1 g of protein per 100 kcal — essentially not a protein source.
Where do these calorie figures come from?: USDA FoodData Central record 169124, “Pineapple, raw, all varieties” (SR Legacy, FDC SR Legacy 2018-04 + FNDDS 2024-10-31). Energy is USDA nutrient 1008 (Energy, kcal); protein, fat and carbohydrate are read from the same record. USDA data is in the public domain, and the FDC ID above links straight to it.

How calorie.one logs it

Type “pineapple” into calorie.one and the app matches this exact record — “Pineapple, raw, all varieties” — estimates the grams, and shows the line with its USDA label. You correct the amount; the per-100 g figure is never guessed. That split between recognition and arithmetic is the whole methodology. For the numbers in context, read How many calories are in a banana?.