Using helium pycnometer the starch density of different origin was determinated. The highest its value among natural starches was for the potato starch – 1,5176 g/cm³, but the lowest for the maize starch – 1,5032 g/cm³. It was also discovered that the process of starch removal of fat had a little influence on its density. Considerating the defatted wheat starch in the temperature 80°C the density was slightly decreased, but increased in case of the rest of defatted starches. The greatest density after defatting had oat starch (the extraction temperature – 80°C) – 1,5196 g/cm³. The values of standard deviations for the density measurement were from 0,0002 to 0,0016 g/cm³, but the variability coefficient from 0,01 to 0,1%, what testify that this method is very accurate.