Ovulation Calculator

Result

Important dates for this cycle:

Ovulation WindowSep 30, 2025 - Oct 8, 2025
Most Probable Ovulation DateOct 4, 2025
Intercourse Window for PregnancySep 25, 2025 - Oct 8, 2025
Pregnancy TestOct 13, 2025
Next Period StartOct 18, 2025
Due Date If PregnantJun 27, 2026

Ovulation Calendar

September 2025
SMTWTFS
123456
78910111213
14151617181920
21222324252627
282930

Next 6 Cycles

Period StartOvulation WindowDue Date
Sep 20, 2025Sep 30, 2025 - Oct 8, 2025Jun 27, 2026
Oct 18, 2025Oct 28, 2025 - Nov 5, 2025Jul 25, 2026
Nov 15, 2025Nov 25, 2025 - Dec 3, 2025Aug 22, 2026
Dec 13, 2025Dec 23, 2025 - Dec 31, 2025Sep 19, 2026
Jan 10, 2026Jan 20, 2026 - Jan 28, 2026Oct 17, 2026
Feb 7, 2026Feb 17, 2026 - Feb 25, 2026Nov 14, 2026

Related Calculators

Pregnancy CalculatorPregnancy Weight Gain CalculatorPregnancy Conception CalculatorASQ Calculator
FinanceFitnessMathOther

Ovulation Tips

  • Track cycles for 3-6 months to confirm regularity.
  • Use ovulation kits for precise LH surge detection.
  • Have regular intercourse during the fertile window.
  • Consult a doctor for irregular cycles or conception issues.

Key Ovulation Facts

  • Fertile Window: Days 10-18 of cycle, peaking at ovulation.
  • Sperm Viability: Survives up to 5 days in the body.
  • Egg Lifespan: Viable for 12-24 hours post-ovulation.