The volume of semen released per ejaculate varies. It is estimated that an average of around 3.4 milliliters (mL) is ejaculated at one time. The amount ejaculated can be as high as 4.99 mL or as low as 2.3 mL.
If there is a prolonged gap between ejaculations, the number of sperm in the semen increases, but there is no overall increase in the semen.