🌸 Pregnancy & Fertility Tool

Ovulation Calculator

Find your most fertile days. Enter the first day of your last period and average cycle length to discover your fertile window and ovulation date.

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Ovulation & Fertility Calculator

First Day of Last Period

Average Cycle Length

Most Likely Ovulation Date

Fertile Window

High chance of conception

Next Period Expected

Pregnancy test date

Cycle Month	Fertile Window	Ovulation Date	Next Period

Understanding Ovulation & Fertility

Ovulation is the release of a mature egg from the ovary. It typically happens once every menstrual cycle. The fertile window refers to the days in a woman's menstrual cycle when pregnancy is possible.

Sperm can survive in the female reproductive tract for up to 5 days, while an egg only survives for 12-24 hours after release. Therefore, your fertile window is the 5 days leading up to ovulation, plus the day of ovulation itself.

How it's calculated:

Ovulation typically occurs about 14 days before the start of the next period. For a standard 28-day cycle, this falls on Day 14. For a 32-day cycle, it falls on Day 18 (32 - 14 = 18).

Frequently Asked Questions

When am I most likely to get pregnant? +

You are most likely to get pregnant if you have intercourse on the day of ovulation or the two days prior. Having intercourse every 1-2 days during your entire 6-day fertile window maximizes your chances.

Can I ovulate right after my period? +

Yes, if you have a very short menstrual cycle (e.g., 21 days). Since ovulation happens roughly 14 days before the next period, a 21-day cycle means ovulation occurs around day 7. If your period lasts 5-6 days, you could ovulate right after it ends.

What are the signs of ovulation? +

Common signs include changes in cervical mucus (becomes clear, slippery, and stretchy like raw egg whites), a slight increase in basal body temperature (measured in the morning), mild pelvic ache or cramp (mittelschmerz), and increased sex drive.