Conception Date Calculator
Estimate the most likely date of conception from a known due date or last menstrual period.
About
Conception typically occurs at ovulation, around day 14 of a 28-day cycle (adjusted for cycle length). From the due date, conception is approximately 266 days earlier.
Frequently Asked Questions
Is the Conception Date Calculator free to use?
Yes, the Conception Date Calculator is 100% free to use. There are no subscriptions, no sign-ups, and no hidden fees.
Is my data safe when using the Conception Date Calculator?
Absolutely. All calculations performed by the Conception Date Calculator happen locally in your web browser. We do not store, track, or transmit your inputs or results to any server.
How accurate is the Conception Date Calculator?
Our Conception Date Calculator uses industry-standard formulas and methodology. You can view the exact formula and calculation logic used in the methodology section above to verify the math yourself.
Can I use the Conception Date Calculator on my mobile phone?
Yes! The Conception Date Calculator is fully responsive and works seamlessly on all devices including smartphones, tablets, and desktop computers.