Preconception, Pregnancy, Baby & Family Calculators

You'll find dozens of calculators at WhenMyBaby, from our pregnancy test and implantation calculators to advanced ovulation calculator, cycle calculators and many more for you, your baby and family.

Conception Calculators

Pregnancy Calculators

Mom and Baby Calculators

Healthy Calculators

MyMonthlyCycles Calculators

Visit our site MyMonthlyCycles.com where you'll find more free period, fertility, and pregnancy calculators

Plus, a complete set of free trackers apps that will work on your smartphone, tablets, and laptop/PC computer:

And fertility charts, menstrual cycle charts, symptom charts!

Since 2003, tens of millions of women world-wide have used MyMonthlyCycles to help achieve their cycle goals; Many moms have used MyMonthlyCycles as they've conceived not just their first baby, but their entire family!

If I Get Pregnant This Cycle...?

If you are in the two week wait, or getting close to when your next period should start, and wondering Am I Pregnant, now's the time to stock up on early pregnancy tests, many of which can be used days before your missed period.

When Can I Pregnancy Test?

Our early pregnancy test calculator uses your current cycle info to determine your test days, including early testing.

If I'm pregnant, when am I in week 6, week 12, 27...?

Pregnancy Weeks 1 - 40 makes it super easy to jump to each week of your pregnancy, and find out how long until (or since) a given pregnancy week, all in relation to your last menstrual period start date.

Holiday Calendar - View when holidays and celebrations occur by month and year - this year, future years, past years - with holiday countdowns.