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. Post navigation No President Ever Tried This. Trump Just Did — On Live Camera Retired Paramedic Helps Cop Save Baby Who Stopped Breathing