Ovulation Calculator

This page explains the process of ovulation and methods for checking the date of ovulation.

Ovulation is part of the menstrual cycle and refers to the ovary discharging an ova.
Women already have approximately 2 million cells known as primordial follicles that contain ova.

With puberty a hormone that stimulates the ovarian follicles begins to be secreted and once in the menstrual cycle (approx. 30 days) a primordial follicle matures and the ovum inside is discharged.

Calculation of ovulation dates in the Ogino method is based on the theory that the ovulation date will occur in the five days (plus or minus two) fourteen days before the scheduled date of the next menstruation - the ovulation period is between 12 and 16 days before the scheduled date of the next menstruation.

There are a number of methods of predicting the date of ovulation and the ones we will present here are mostly methods that you can use yourself.

Ogino method

This method predicts the date of ovulation from the start of the menstruation and the length of menstruation. For more information see the page on Ogino method.

Basal body temperature

This method predicts your ovulation date by measuring your basal body temperature and reading the waves on a graph of your basal body temperatures. It is said that ovulation takes place just before the period of high temperature (when the temperature abruptly drops a little).

Cervical mucus check

In this method, take some of the mucus from your cervix with your hand and predict the ovulation date based on its stickiness. If the mucus on your finger can be spread out fully then it may be your ovulation day. Further, after ovulation there may be a small amount of blood discharge and this is another indicator.

Ovulation disease

Some people feel pain in the days near their ovulation called ovulation pain, although it varies from person to person. This pain is during the growth of the follicle or due to a mature follicle bursting.

Medicines for checking ovulation

Widely available medicines for checking ovulation examine the density of the LH hormone (the hormone that encourages ovulation) in urine.

Examining your saliva

Widely available test kits check the ovulation date based on the form of the crystals of saliva by observing them through a microscope.

Tests at hospital

Ovulation dates can be predicted by echo tests at hospitals.