Pregnancy / Ovulation Calculator

Calculate fertility windows

This calculator estimates your fertile window based on your menstrual cycle. Results are estimates and may vary.

First Day of Last Period

Average Cycle Length (days)

Due date calculations are estimates. Consult with your healthcare provider for accurate medical advice.

Calculation Method

Last Menstrual Period Conception Date

First Day of Last Period

This calculator estimates when conception likely occurred based on your due date or current pregnancy week.

Based On

Due Date Current Pregnancy Week

Due Date

Results

Important Medical Disclaimer

This calculator provides estimates only and should not be used as a substitute for professional medical advice. Ovulation and conception dates can vary significantly between individuals and cycles. Pregnancy due dates are approximations. Always consult with your healthcare provider for personalized medical guidance, prenatal care, and family planning decisions.