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Pregnancy Conception Calculator
Pregnancy Conception Calculator
Estimate conception date and fertile window based on your cycle
Calculator
Information
Calculate from
Last Menstrual Period
Due Date
First day of last menstrual period
February 2026
Su
Mo
Tu
We
Th
Fr
Sa
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Menstrual cycle length
21 days
22 days
23 days
24 days
25 days
26 days
27 days
28 days (average)
29 days
30 days
31 days
32 days
33 days
34 days
35 days
Calculate
Reset
Results are estimates based on average cycle patterns. Individual experiences may vary.
