Clomid Ovulation Calculator

Your details

Both medications stimulate ovulation but have slightly different timing profiles. Letrozole ovulation can lag a bit longer after the last pill.
The calendar date you took your first tablet of this medication cycle.
Most standard Clomid and Letrozole regimens run 5 days. Your doctor may prescribe a shorter or longer course.
The day of your menstrual cycle on which you took the first tablet. Day 1 is the first day of full flow. Days 3-5 are most commonly prescribed.
Expected ovulation date
September 22, 2026

Most likely day of egg release (median timing)

Last pill dateSeptember 15, 2026
Ovulation windowSeptember 20, 2026 to September 25, 2026
Peak fertility (best days to try)September 20, 2026 to September 22, 2026
Implantation windowSeptember 28, 2026 to October 4, 2026
Earliest reliable pregnancy testOctober 6, 2026
Estimated due date (if conceived)June 13, 2027 to June 18, 2027
  • First pill
  • Last pill (5-day course)
  • Ovulation window starts
  • Expected ovulation
  • Ovulation window ends
  • Implantation window
  • Pregnancy test

Expect ovulation around September 22, 2026 after your 5-day Clomid course.

  • Your expected ovulation is on September 22, 2026, but the window extends from September 20, 2026 to September 25, 2026 - ovulation can vary even on medication.
  • The best days to try to conceive are September 20, 2026 to September 22, 2026, the two days before expected ovulation through ovulation day itself. Conception is not possible from intercourse after ovulation, so do not save these days for later.
  • If implantation occurs you can expect it between September 28, 2026 to October 4, 2026. Wait until October 6, 2026 to test for the most reliable result.
  • Starting Clomid on cycle day 5 is a common regimen; some doctors prefer day 3 to allow a slightly larger follicle pool.

Next stepUse ovulation predictor kits (OPKs) starting 3-4 days before your expected ovulation date to pinpoint the LH surge. Pair with ultrasound monitoring if your doctor recommends it.

 = Powered by OnlyCalculators