How many sunflower kernels are in 1 cup?

One cup of sunflower kernels typically contains around 140 to 150 grams, which is roughly 1 to 1.5 cups of whole sunflower seeds, depending on their size and how tightly they are packed. The number of individual kernels can vary, but on average, there are about 2,000 to 3,000 kernels in a cup. This can fluctuate based on the specific variety and processing of the seeds.