Conception CalculatorOnline Pregnancy Calculations Are Not a Medical Diagnosis
The website does not diagnose pregnancy, confirm gestational age, determine viability, interpret an ultrasound, assess fetal growth, prescribe care, or establish an official due date. A formula can transform dates entered by a user, but it cannot evaluate symptoms, medical history, examination findings, laboratory results, or scan quality.
Do not delay or change prenatal, fertility, or emergency care because of an online result. A qualified healthcare professional should interpret records and decide which dating method applies to an individual pregnancy.
Conception Date and Intercourse Ranges Are Not Paternity Evidence
Estimated conception and intercourse windows are broad biological possibilities. Ovulation can shift, sperm can remain viable before fertilization, and the due date used for a reverse calculation may itself be uncertain. The dates cannot identify a parent or prove which act of intercourse caused pregnancy.
Questions about parentage have significant personal and legal consequences. Use appropriate professional advice and legally valid testing rather than comparing calendar windows from this or any other online calculator.
Ovulation and Fertile Window Estimates Are Not Contraception
A menstrual calendar cannot confirm when ovulation occurred and may miss an early or late fertile window. Do not treat dates outside the displayed window as safe for unprotected sex. The conception and ovulation calculators are not contraceptive methods.
The tools also cannot diagnose infertility or guarantee conception. Seek qualified guidance for contraception, persistent cycle changes, difficulty conceiving, or questions about fertility testing and treatment.
Ultrasound and IVF Calculator Results Do Not Replace Clinic Records
The ultrasound method uses only the scan date and gestational age typed into the form. It does not read measurements or decide whether a scan should change an established due date. The IVF method uses only transfer date and selected embryo age and cannot verify a treatment protocol.
Use the due date and gestational age documented by the fertility or prenatal care team. Contact that team when a clinic record conflicts with the website instead of substituting the online result.
Pregnancy Due Dates and Milestones Are Calendar Estimates
A 40-week due date is a reference point, not a promised delivery day. Delivery windows, trimesters, and week-based milestones shown on the site are general calendar markers. They are not recommendations for tests, appointments, induction, delivery, or other care.
Formula details and assumptions are listed on the pregnancy calculator methodology page. The existence of a cited source does not turn a general calculation into individualized medical advice.
Seek Immediate Help for Urgent Pregnancy Symptoms
This website is not monitored for emergencies. Contact local emergency services or an appropriate healthcare service for severe pain, heavy bleeding, breathing difficulty, loss of consciousness, reduced fetal movement, or any symptom you believe may be urgent.
Do not email urgent symptoms through the corrections address. The website cannot assess risk, provide triage, or contact a medical professional on your behalf.