1 cup of kosher salt (diamond crystal) in grams — 142 g.

Why 142 g per cup

Diamond Crystal kosher salt's hollow pyramidal flakes trap air, halving its volumetric density to 142 g/cup. By the teaspoon, Diamond Crystal is about half the weight of table salt — recipes that don't specify the brand can be off by a factor of two.

Salt brand matters more than salt brand evangelists realise. Diamond Crystal kosher salt is barely half the weight of table salt per cup (142 g vs 292 g) because the flake structure traps air. Morton kosher sits in between at 240 g/cup. Most recipes don't specify which they mean — when scaling, always convert via weight.

The most accurate way to measure kosher salt (diamond crystal)

For recipes where the outcome matters — bakes, doughs, anything leavened — measure kosher salt (diamond crystal) on a kitchen scale set to grams. Set the bowl on the scale, press tare to zero, then add until the readout matches the gram value the recipe calls for. This removes the largest source of cup-to-cup variation: how you scoop.

The cup-based numbers on this page assume the “spoon and level” method — fluffing the ingredient in its container, spooning it into the cup, and levelling the top with a straight edge. Scooping directly with the cup packs more in, and can push the gram value up by 20-30 % for fluffy ingredients like flour and cocoa.