Health
Ovulation Calculator
Track your fertility window and predict ovulation based on your menstrual cycle
Ovulation Date2026-10-13 View results
days
days
days
Real-time Results
Ovulation Date
2026-10-13
Estimated day when ovulation occurs
Fertile Window
2026-10-08 to 2026-10-14
Days with the highest chance of conception
Next Period
2026-10-27
Expected start date of your next period
Next Three Cycles
Projected dates for future cycles
| Item | Value |
|---|---|
| Cycle 1 Predicted Ovulation: 2026-11-10 | 2026-10-27 to 2026-10-31 |
| Cycle 2 Predicted Ovulation: 2026-12-08 | 2026-11-24 to 2026-11-28 |
| Cycle 3 Predicted Ovulation: 2027-01-05 | 2026-12-22 to 2026-12-26 |
Disclaimer
The data provided by this health calculator is for reference only and cannot replace professional medical diagnosis, consultation, or treatment. Please consult a doctor before making any changes to your fitness or diet plan.
Supported inputs
| Input | Description |
|---|---|
| Last Period Start Date | When your most recent period began |
| Cycle Length (days) | Standard is 28 days |
| Period Length (days) | Typical range is 3-7 days |
| Luteal Phase Length (days) | Average is 14 days |
Formula
Ovulation & Fertile Window Calculation: 1. Next Period Start Date = Last Period Start Date + Cycle Length 2. Ovulation Date = Next Period Start Date - Luteal Phase Length (typically 14 days) 3. Fertile Window Start = Ovulation Date - 5 days 4. Fertile Window End = Ovulation Date + 1 day
Related Calculators
More calculators selected by category and topic.
Complementary Tools
Related Tags: