Ovulation Calculator
Track your fertile window and ovulation date
Average: 28 days
Ovulation Date
Fri, Jan 30
Most fertile day
Next Period
Fri, Feb 13
In 14 days
Fertile Window
Sun, Jan 25 - Sat, Jan 31
6-day window with highest chance of conception
Cycle Calendar
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Period Fertile Ovulation
Key Dates
| Last Period Started | Friday, January 16, 2026 |
| Fertile Window Starts | Sunday, January 25, 2026 |
| Ovulation Day | Friday, January 30, 2026 |
| Fertile Window Ends | Saturday, January 31, 2026 |
| Next Period Expected | Friday, February 13, 2026 |
Understanding Your Cycle
- Ovulation: Typically occurs 14 days before your next period
- Fertile Window: 5 days before and 1 day after ovulation
- Peak Fertility: The 2 days before and day of ovulation
- Egg Survival: 12-24 hours after ovulation
- Sperm Survival: Up to 5 days in the reproductive tract
Important Notes
This calculator provides estimates based on average cycle patterns. Actual ovulation timing can vary due to stress, illness, medications, and other factors. For more accurate tracking, consider using ovulation predictor kits (OPKs) or basal body temperature monitoring. Consult a healthcare provider for fertility concerns.