Ovulation Calculator

Determine your most fertile days and increase your chances of conceiving using our easy-to-use Ovulation Calculator

(The first day of your period is counted as the first day of your menstrual cycle.)
Last Period Date is Invalid. Please do not enter a date earlier than 38 days

(The average cycle is said to be 28 days but most women vary somewhat from the average cycle.)
Cycle Length should be between 1 to 40. Number of Cycles should be between 0 to 20.

(The first day of your period is counted as the first day of your menstrual cycle.)
(The average cycle is said to be 28 days but most women vary somewhat from the average cycle.)

Modify Period Data

Your next ovulation day falls on


Note: The calculator provides an estimate based on the information you provide and may not be accurate. Please seek advice from a medical professional if you are trying to conceive.

The Ovulation Story

  • First day of menstruation
  • The first day of your menstrual cycle is the first day of your period (day 1). The period usually then lasts anything from 3 to 7 days. You'll probably find that if you get any period pains, they'll be at their worst in the first few days of your period. This is because the hormones in your body are causing your womb to actively shed the lining that was built up in the previous menstrual cycle.

    Click to know more

  • Fertile Window
  • You are at your most fertile in the five days leading up to and including ovulation. These five days are called your fertile window. Your fertile window is calculated using the date of the first day of your last menstrual period and combining it with the usual number of days in your menstrual cycle. From this you can work out the day you will ovulate. Once you know when you will ovulate you can calculate which days you will be at your most fertile.

    Click to know more

  • Ovulation Day
  • Ovulation is a process whereby a mature egg is released from the ovaries and travels down the fallopian tube where the fertilization by a sperm cell may occur. It is important to know when ovulation is likely to happen, as a woman is more suspectable to conceive during this time.

    Click to know more

  • Conception Day
  • Conception occurs when a sperm cell from a fertile man swims up through the vagina and into the uterus of a woman and joins with the woman's egg cell as it travels down one of the fallopian tubes from the ovary to the uterus

    Click to know more

  • Implantation
  • Implantation is one of the most dramatic biological events of entire pregnancy - fertilization being the first. Although you may not even notice that implantation is happening although some woman experience period-like cramping and a little spotting . Either way, implantation silently marks the making of an embryo even before you know for sure that you're expecting.

    Click to know more

  • Test for pregnancy
  • Your best bet is to wait to take a pregnancy test until about 19 days after fertilization in order for HCG to build up to a level that's detectable in your urine. HCG production begins as soon as the embryo implants in our uterus which is between six to 12 days after fertilization.

    Click to know more

    Huggies

    Ovulation Calculator

    (The first day of your period is counted as the first day of your menstrual cycle.)
    (The average cycle is said to be 28 days but most women vary somewhat from the average cycle.)

    Note: The calculator provides an estimate based on the information you provide and may not be accurate. Please seek advice from a medical professional if you are trying to conceive.