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
November 11, 2026

Most likely day of egg release (median timing)

Last pill dateNovember 4, 2026
Ovulation windowNovember 9, 2026 to November 14, 2026
Peak fertility (best days to try)November 9, 2026 to November 11, 2026
Implantation windowNovember 17, 2026 to November 23, 2026
Earliest reliable pregnancy testNovember 25, 2026
Estimated due date (if conceived)August 2, 2027 to August 7, 2027
  • First pill
  • Last pill (5-day course)
  • Ovulation window starts
  • Expected ovulation
  • Ovulation window ends
  • Implantation window
  • Pregnancy test

Expect ovulation around November 11, 2026 after your 5-day Clomid course.

  • Your expected ovulation is on November 11, 2026, but the window extends from November 9, 2026 to November 14, 2026 - ovulation can vary even on medication.
  • The best days to try to conceive are November 9, 2026 to November 11, 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 November 17, 2026 to November 23, 2026. Wait until November 25, 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.

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