Ovulation Calculators Help Determine Baby Making Time | POPSUGAR Moms

On sites like BabyHopes and WebMD, simply enter the first day of your last period and how many days are in your cycle (usually 28) and your probable ovulation dates will reveal themselves. Some calculators, like the one on Parenthood.com, will even show you the astrological sign that corresponds with the baby’s approximate due date.