Wheat berries

One US cup of wheat berries weighs 192 grams. Going the other way, 100 grams is about 0.52 cups.

Also called hard red wheat berries, hard red winter wheat, hard red spring wheat, whole wheat kernels, wheat groats, raw wheat berries.

Two sources agree within tolerance. USDA FoodData Central publishes Wheat, hard red winter (SR Legacy) at 1 cup = 192 g, implying a density of 0.8115 g/mL. The parallel SR Legacy record for hard red spring wheat publishes the same 192 g per cup, so the figure applies to both major hard red classes. King Arthur's Ingredient Weight Chart lists 'Wheat berries (red)' at 1 cup = 184 g, implying 0.7778 g/mL. The gap between them is 4.35%, well inside the 10% milled tolerance for whole grains, so this entry publishes USDA's figure of 192 g per cup and names both sources. Neither source names a specific filling method.

At 0.8115 g/mL, wheat berries sit at the top of the density band this site tracks, denser than any nut, seed or milled flour published here. Individual wheat kernels are small (5 to 8 mm long, 2 to 4 mm wide), hard, and oblong, and slide readily against each other to fill gaps. Small hard oblong particles are well-behaved in cup measurements: they self-level, settle predictably, and are not orientation-sensitive the way flat pumpkin seed kernels are. The 4.35 percent gap between USDA and King Arthur is inside what would be expected from measurement rounding and normal fill variation, without any physical mechanism required to explain it.

The whole-versus-ground pattern documented elsewhere on this site holds for wheat as well. Whole wheat flour publishes here at a lower density than wheat berries because milling breaks the intact kernel geometry into fine particles that bridge and trap air. The same pattern was documented for flaxseed on this site (whole seed at 140 to 168 g per cup versus meal at 100 to 112) and for hazelnuts (whole kernels at 135 g per cup versus chopped at 115). Wheat berries are the unprocessed form, so their density reflects the natural packing of the intact grain and comes out higher than any ground product derived from them.

Wheat classification: USDA defines multiple wheat classes based on hardness (hard, soft, durum), color (red, white, amber) and planting season (spring, winter). Hard red winter and hard red spring are the two dominant baking varieties, and both publish at essentially identical density in USDA data — the 192 g per cup figure holds across both classes. King Arthur's chart specifies 'red' without distinguishing spring versus winter, which is appropriate given USDA shows no meaningful density difference between them. Soft red winter wheat, used for cookies and crackers, publishes at approximately 168 g per cup per USDA (lower density because soft wheat kernels are slightly larger and more porous). Durum wheat berries, used for pasta production, publish at approximately 192 g per cup similar to hard red varieties.

Product variants: raw wheat berries sold for cooking and milling are always hulled (the inedible outer husk is removed during threshing), so there is no cup-portion distinction between hulled and unhulled at retail. Sprouted wheat berries retain roughly the same dry weight and cup volume as unsprouted, though the sprouting process alters starch composition. Cracked wheat, wheat groats, and bulgur are separate products with different cup weights and would earn their own entries when a second authoritative source becomes available.

Wheat berries are placed in the milled category alongside other whole grains, whole seeds and whole nuts. The category rule tracks physical packing behavior: whole grains pack by scoop with air gaps in the same way as whole seeds and nuts. The 10 percent category tolerance applies here, and the 4.35 percent observed gap between sources is comfortably inside it.

No standards body publishes a bulk density for wheat berries. Codex Alimentarius has standards for wheat and durum wheat covering moisture content, defect tolerances, foreign matter limits and mycotoxin controls but not physical density of the whole grain. 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.