How accurate are the "Internet ovulation calculators"?

[PhenomenalWoman_]

They're not. I actually used the babycenter.com one at first. I finally started charting my temps because I wasn't getting pregnant. Turns out that the online calculator was off by a week! It's much better if you listen to your body (charting cervical mucus and temps) rather than some online calculator that is based on statistics. Good luck and lots of baby dust!!!

 

[Steph]

I use the ovulation calculators on websites like babycenter. I was wondering if anyone knows how accurate these actually are.