Average semen volume and normal sperm count
Q: About how much volume of fluid does the average guy put out during orgasm?

The general consensus when I looked this one up was 2-6 milliliters of semen per ejaculation. You'll tend to ejaculate a larger volume if you haven't had an orgasm in a while, and tend to produce a smaller amount if you've just had an orgasm recently.
According to the World Health Organization, a 'normal' sperm count has (at minimum):
- a concentration of spermatozoa of 20 million per ml.
- 2ml. total volume of semen
- 40 million spermatozoa in the ejaculate
- 75% live sperm
- 30% normal spermatozoa (in shape and form)
- 25% of the sperm swimming forward quickly
- 50% of the spermatozoa swimming forward, at any speed

