On Death Clock, you enter your personal data and your body mass index (BMI) and click the check your death clock button. Up pops a window with the news on when statistics predict the grim reaper will be calling.

Not happy? Fortunately there's information on how changing your habits can delay your death clock.

Want a second opinion? Try the When Will I Die Quiz. It is another site that gathers a bit more information and makes its own prediction of when your time will be up.

Still not convinced? Try the Death Meter Final Countdown. Again, enter similar data and there you have it. The ultimate bad news.

A lot of people find sites like these great motivators to stay on a diet or change their lifestyles. 



http://www.deathclock.com/  

http://www.gotoquiz.com/special/when_will_i_die.html  

http://www.findyourfate.com/deathmeter/deathmtr.html