Cumin Seeds, Whole

One US cup of cumin seeds, whole weighs between 95.6 and 108.9 grams, depending on how the cup is filled and which source measured it. That range is the answer; a single number would not be. Every figure behind it is below, with the method each source used.

Also called whole cumin seeds, jeera, jeera whole, cumin seed, Cuminum cyminum seed.

Whole cumin seeds pack at 96 to 109 g per US cup. USDA and Chef's Resources disagree by 13 percent, likely reflecting differences in measurement method, seed origin, or moisture content — enough variance that the site publishes the range rather than picking one figure.

Cumin seeds are the small (roughly 5 mm long and 2 mm wide), elongated, ridged seeds of Cuminum cyminum, an annual plant in the parsley family. Cumin is one of the most widely used spices globally, second only to black pepper by volume, and is a signature ingredient in Indian, Mexican, Middle Eastern, and North African cuisines. It shows up in curry powder, garam masala, taco seasoning, ras el hanout, and berbere. Cumin seeds are sold whole (tempered in hot ghee for Indian tadka, toasted whole for Mexican dishes, or steeped in brines and pickle mixes) and ground (the more common Western form). This entry covers the whole seed; the ground form has its own physical behavior and would be a separate entry.

Published sources disagree substantially. USDA FoodData Central's SR Legacy record for Spices, cumin seed (whole) gives 101 g per metric cup, which works out to 96 g per US cup at a density of 0.404 g/mL. Chef's Resources publishes 3.84 oz per cup (109 g, density 0.460 g/mL). The 13.5 percent spread exceeds the 10 percent milled tolerance held for this category. King Arthur's Ingredient Weight Chart does not list whole cumin seeds in any form, so there is no third reference figure to break the tie between USDA and CR.

The variance is plausibly genuine rather than measurement error. Cumin seeds are elongated with pronounced ridges, and elongated particles pack differently depending on how they settle in the cup. A loose, unshaken cup has more air trapped between randomly oriented seeds; a tapped or settled cup has seeds that have reoriented and nested more efficiently. Seed moisture and essential-oil content also drive density: fresh cumin with intact volatile oils is heavier per particle than older seeds that have lost oil to oxidation. Origin matters too — Indian cumin (jeera), Iranian cumin, and Turkish cumin are all sold as Cuminum cyminum but differ in average seed size and oil content. The USDA figure may represent a specific origin or measurement method that CR did not use.

Cumin seeds ground into powder shift density in the same direction as most other solid-seeded spices: the fluffy powder is lighter per cup than the whole seeds it came from. In the ground-mustard entry the site notes that ground mustard is roughly half the cup weight of whole mustard seeds; the ground-cumin pattern is milder (published ground figures cluster near 96 g per cup, similar to the low end of the whole-seed range) but goes in the same direction. Grinding replaces tightly nesting hard spheroids with a cohesive fluffy powder that bridges across the cup walls. This is the opposite of the ground-coriander pattern, where whole seeds contain internal hollows that ground powder fills, and ground coriander ends up denser than whole.

For recipes calling for whole cumin seeds by volume, the difference between the low and high end of published sources is about a rounded tablespoon per cup. In practice, most whole cumin uses (Indian tadka, blooming in hot fat, whole seed rubs) call for teaspoons rather than cups, and at that scale the variance is negligible. For bulk-batch recipes (spice blends, pickling, chili base) where a cup measure is used, weighing by gram is more accurate.