Trying to get pregnant? Our fertility and ovulation calculator can tell you the best days to try to conceive. It can even tell you your baby's possible due date! To determine when you're most likely to conceive, enter the first day of your last menstrual period:
First day of your last menstrual period / /
Length of your menstrual cycle
The length of your cycle is the number of days between the first day of your last period and the first day of your next period.
If your cycle is greater than 35 days, or less than 25 days, you may not be ovulating. Please consult your doctor before using this tool.
· How this fertility calculator works
· Sign up for our Trying to Conceive Newsletter
· Think you're pregnant? Try our due date calculator
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