How much sperm is required to make a girl pregnant?

[darrensusername]

I was wondering when guys masturbate and do the technique where you masturbate and stop then go again there can be some sperm (low amount) that comes out and if a guy is having sex with a girl and he does this technique can a girl get pregnant? Also how much sperm can get a girl pregnant? Any amount?

[demonbuttercup]

One sperm is all it takes.

[katiebug]

It only takes one sperm cell to get pregnant. So yes, any amount of sperm. No method keeps you safe from pregnancy except for using a condom or using birth control. The other option is to simply not have sex.

[Brandye]

You are confusing sperm (the impregnator) with semen (the vehicle that carries it). A typical ejaculation is about one tablespoonful - 90% of that is semen. The remainder is sperm - 400 million of them. It takes only one sperm, as Demon points out, and you can imagine how many are in one drop of semen.