Pregnancy Conception Calculator
Calculate your most fertile days for conception based on your menstrual cycle with our free online fertility calculator.
Category: Fitness & Health
The average menstrual cycle is 28 days, but it can range from 21 to 35 days.
Frequently Asked Questions
When is the best time to conceive?
The best time to conceive is during your fertile window, which typically includes the 5 days before ovulation and the day of ovulation. Sperm can live in the female reproductive tract for up to 5 days, while an egg is only viable for about 24 hours after ovulation. Having intercourse during this window maximizes your chances of conception.
How accurate is this conception calculator?
This calculator provides an estimate based on typical menstrual cycle patterns, assuming regular cycles. The accuracy depends on how regular your cycles are and whether your ovulation consistently occurs 14 days before your next period. For more precise tracking, consider using ovulation predictor kits, basal body temperature tracking, or fertility monitoring devices.
Can I get pregnant outside my fertile window?
While it's significantly less likely, pregnancy can technically occur outside the calculated fertile window, especially if you have irregular cycles or if ovulation occurs earlier or later than expected. Stress, illness, travel, and other factors can affect the timing of ovulation, which can make fertility predictions less reliable.
How long does it typically take to conceive?
Among couples with no fertility issues who have regular unprotected intercourse, about 84% will conceive within a year, and about 92% will conceive within two years. However, this varies widely based on age, health conditions, frequency of intercourse, and other factors. If you've been trying to conceive for over a year (or 6 months if you're over 35), consider consulting with a healthcare provider.