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  • Operating Hours

    Mondays to Fridays: 8am to 5pm
    Saturdays: 8am to 1pm
    Sundays and Public Holidays: CLOSED

  • KL Fertility Centre

    LG Lot 23A, 25, 26, 27 & 30 DC MALL,
    No 6 Jalan Damanlela, Bukit Damansara,
    50490 Kuala Lumpur, Malaysia.

    TELEPHONE
    +603 2780 4288

    FAX
    +603 2780 4299

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    PERSONAL DATA USE CONSENT By submitting this form, you agree and consent to your personal data which you provide to KL FERTILITY CENTRE (“KLF”) in this form being processed, collected, used, disclosed and/or retained by KLF and its members, officers, employees, servants, agents, representatives and sub-contractors for (a) the purposes of administering the (a) Registration and in relation to your participation in the same, (b) promotional, marketing and publicity purposes relating to the Registration and KLF generally, (c) for KLF’s conduct of research, analysis and development activities (including data analytics, surveys and/or profiling) to enhance KLF’s programme offerings and operations, and (d) reference and archival purposes, in accordance with KLF's policies and processes relating to personal data protection. For more information on KLF's Privacy Policy, please visit privacy policy*

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    PERSONAL DATA USE CONSENT By submitting this form, you agree and consent to your personal data which you provide to KL FERTILITY CENTRE (“KLF”) in this form being processed, collected, used, disclosed and/or retained by KLF and its members, officers, employees, servants, agents, representatives and sub-contractors for (a) the purposes of administering the (a) Registration and in relation to your participation in the same, (b) promotional, marketing and publicity purposes relating to the Registration and KLF generally, (c) for KLF’s conduct of research, analysis and development activities (including data analytics, surveys and/or profiling) to enhance KLF’s programme offerings and operations, and (d) reference and archival purposes, in accordance with KLF's policies and processes relating to personal data protection. For more information on KLF's Privacy Policy, please visit privacy policy*

    Fertile Day Calculator

    Track Your Cycle, Predict Ovulation, and Find Your Fertile Window

    Use our Fertile Day Calculator to estimate your fertile window, predict ovulation, track your next period, and know the best time for a pregnancy test. If conception occurs, you can also see an estimated due date.

  • How long is your cycle?

    Don't Know Your Last Menstrual Period?

    Take control of your cycle now and let our team guide you.

  • Your last menstrual period start date:

    Calculate
  • Last Menstrual Period:

    Fertility Day Calculator Results

  • The fertile window refers to the days in your menstrual cycle when conception is most likely to occur. This usually covers the 3-5 days leading up to ovulation and the day of ovulation itself.

    • An egg only survives 12–24 hours after being released.
    • Sperm can live in the female reproductive tract for up to 5 days.
    • To maximise your chances of pregnancy, try to have intercourse every other day during this window.

    Ovulation is when a mature egg is released from the ovary and travels down the fallopian tube, where fertilisation can happen. It typically occurs about 14 days before your next period, but timing can vary.

    Ways to predict ovulation more accurately:

    • Monitor cervical mucus changes
    • Track basal body temperature
    • Use an ovulation prediction kit (OPK)

    Your next period start date is estimated based on your average cycle length. The actual date may shift depending on:

    • Stress
    • Illness
    • Travel
    • Hormonal changes

    A home pregnancy test detects the hormone human chorionic gonadotropin (hCG), which rises 6-12 days after implantation (around 12-14 days after ovulation).

    For accurate results:

    • Take the test on or after the day your period is due.
    • Testing too early can cause a false negative.
    • If your period still hasn't started, wait a few days and test again.

    If conception occurs during this cycle, your estimated due date is calculated as about 40 weeks (280 days) from the first day of your last menstrual period.

    The actual due date may vary depending on:

    • The timing of ovulation
    • When implantation occurs
    • Early pregnancy ultrasound findings