Pineapple (fresh, diced)

One US cup of pineapple (fresh, diced) weighs 165 grams. Going the other way, 100 grams is about 0.61 cups.

Also called fresh pineapple diced, raw pineapple chunks, fresh pineapple chunks, diced pineapple, cored diced pineapple.

Two sources agree within tolerance. USDA FoodData Central FDC 169124 (Pineapple, raw, all varieties, SR Legacy) publishes 1 cup chunks at 165 g, implying a density of 0.6975 g/mL. King Arthur's Ingredient Weight Chart lists 'Pineapple (fresh or canned, diced)' at 1 cup = 170 g, implying 0.7186 g/mL. The gap between them is 3.03 percent, well inside the 10 percent milled tolerance, so this entry publishes USDA's figure of 165 g per cup and names both sources. Neither source names a specific dice size or filling method.

King Arthur's entry groups fresh and canned diced pineapple under a single figure. USDA specifically measures raw fresh chunks. The 5 gram gap likely reflects this state grouping in the King Arthur figure: canned diced pineapple packs slightly denser than fresh due to syrup or juice impregnation of the flesh, so KA's weighted average across fresh and canned sits marginally above USDA's fresh-only measurement. Both figures remain within measurement precision for the purpose of home baking recipe conversions.

Pineapple flesh at 0.70 g/mL packs meaningfully denser than fresh apple slices at 0.46 g/mL (published elsewhere on this site) despite both being water-rich fresh fruits. The difference comes from cellular structure: pineapple flesh is fibrous and dense, with the fruit tissue formed by fused flowerets giving a continuous mass with fewer internal air spaces. Apple flesh, by contrast, contains large intercellular air pockets that make cut slices bulky per unit mass and let whole apples float readily in water. Pineapple flesh sits close to water density at the cellular level; the apparent 0.70 g/mL at cup measurement reflects inter-piece air gaps rather than internal fruit-flesh porosity.

The comparison across pineapple products on this site tells a familiar physical story. Fresh diced publishes here at 165 g per cup (0.70). Dried pineapple range-publishes at 142 to 160 g per cup (0.60 to 0.68), surprisingly close to fresh despite losing most of the water, because drying compresses the flesh into smaller sticky pieces that pack with different geometry. Canned crushed pineapple would be denser still if published (approximately 247 to 256 g per cup with liquid or drained). The pattern differs from the apple cluster (fresh 109, dried 86, sauce 255) because pineapple's fibrous flesh handles processing differently: apple flesh puffs when dried and collapses when pureed, while pineapple stays more structurally consistent.

Product variants: USDA groups all common pineapple varieties (Smooth Cayenne, Queen, Red Spanish, Sugarloaf, MD-2 or 'Golden' or 'Extra Sweet') under a single record, and cup weights vary by only 1 to 3 percent across cultivars. Extra-sweet MD-2 pineapples, which dominate current supermarket sales, pack at the upper end of the range. Fresh dicing size affects packing: 1 to 2 cm chunks (typical home-cut) match the King Arthur and USDA figures; smaller confectionery-cut pieces (5 mm) pack denser at approximately 180 to 190 g per cup; larger spears pack lighter at 140 to 155 g per cup. The core, which is fibrous and starchier than the outer flesh, is typically removed before dicing but if included would slightly increase the cup weight.

Fresh pineapple is placed in the milled category alongside other chunked solid fruit pieces on this site (apple slices, chopped dates, dried apricots). The category rule tracks physical packing behavior rather than water content: chunked pieces pack by scoop with air gaps in the same way as whole grains, chopped nuts, and dried fruit pieces, regardless of internal cellular moisture. The 10 percent category tolerance applies here, and the 3.03 percent observed gap between sources sits comfortably inside it.

No standards body publishes a bulk density for fresh diced pineapple. USDA Agricultural Marketing Service publishes grade standards for fresh pineapples covering size, color, defect tolerances, and maturity requirements but not diced-form density. Two independent authoritative sources agree within tolerance, so this entry is held at medium confidence. A third independent source, such as a professional culinary reference or a producer's laboratory measurement, matching within tolerance would move it to high confidence.