find out here using the Life Expectancy Calculator, similar to what life insurance agencies use.

or for a quicker result find out here , using the deathclock.

cool thing about the death clock is it gives you a countdown in seconds to the day it predicts you die. for a couple seconds I thought i'd watch it click down to 0 until I realized it's a lot of seconds (like 80years worth)

on a related note, check this out