Due Date Calculator

Want to know what your due date is? This calculator doesn't only base it on Last Menstrual Period (LMP) and cycle length, but also factors in your typical luteal phase. Sorry, it can't calculate based on conception date (but we're working on changing that). Another cool feature is that it can estimate fetal age as well. Have fun!


Last Menstrual Period: (mm/dd/yyyy format)
Average Length of Cycles: (22 to 45) (defaults to 28)
Average Luteal Phase Length: (9 to 16) (defaults to 14)
Estimated Conception:
Estimated Due Date:
Estimated Fetal Age:



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Disclaimer: The information provided in this section is for the entertainment of our visitors and is only for educational purposes. It is not intended to take the place of the advice and/or care of a qualified healthcare professional. Remember that every woman and every pregnancy is unique, and Lotsofkids.com provides only general information about conception, pregnancy and birth. The information contained in this site should not be used as a substitute for care you should receive from a qualified healthcare professional. If you have questions or concerns about your health or the health of your baby, please seek the advice of your healthcare provider.