Pinpoint your fertile window in seconds — then check whether you qualify for HSE-funded IVF under Ireland's 2026 public fertility scheme.
No sign-up. No data stored. 100% private.
Enter your last period date and average cycle length. We'll calculate your fertile window, ovulation day, and next period date.
Typical range: 22–45 days. Average is 28.
Cycle Timeline
Want personalised fertility support? Check your HSE funding eligibility below.
Check HSE IVF Eligibility →Ireland's public IVF scheme offers up to 3 fully funded cycles through designated HSE hubs. Answer 4 quick questions to see if you may qualify under 2026 criteria.
Our calculator uses the Standard Days Method — a validated approach recognised by the Irish Fertility Society.
Day 1 of your last period is the anchor date. Make sure you note the very first day of bleeding.
Ovulation typically occurs 14 days before your next period. For a 28-day cycle, that's day 14; for a 35-day cycle, day 21.
Your fertile window opens 5 days before ovulation — since sperm can survive up to 5 days in the reproductive tract.
Irish Tip: Pair Tracking with Your GP or a Fertility Clinic
Many Irish women combine cycle tracking with basal body temperature (BBT) charting or LH strip tests, available from your local chemist or pharmacist. For irregular cycles, speak with your GP who can refer you to an HSE hub or an accredited fertility clinic.