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Sperm: How long do they live after ejaculation?

How long do sperm live after ejaculation?

The life span of sperm after ejaculation depends on the circumstances.

Sperm ejaculated into a woman's vagina can live in a woman's cervical mucus or upper genital tract for three to five days. Fertilization is possible as long as the sperm remain alive. Sperm ejaculated outside the body might survive in semen the fluid released during ejaculation up to a few hours.

Sperm can be preserved for weeks when semen is stored at a lowered temperature or years when semen is frozen.

Updated: 5/5/2012

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