When is your baby due?
Calculate your due date from last period, conception date, IVF transfer (day 3/5/custom), or early ultrasound. Informational only — always follow your clinician’s advice.
This tool is informational only and does not provide medical advice. Dates may change after a clinical assessment or new scan.
How this works
This tool runs entirely in your browser. It uses well-known clinical formulas and date arithmetic based on your inputs to show estimates and timelines. Results are for general information only and may not match your clinic’s specific guidance.
Important
Informational only — not medical advice. Always follow your clinician’s instructions for testing, timing, and follow-up.
If you have pain, bleeding, severe symptoms, or concerns about pregnancy, contact your clinic or local emergency service.
Sources
Related tools
FAQ
Are these results medical advice?
No. This site is informational only. Use it to understand timing and typical ranges, then follow your own clinician’s instructions.
Why do dates sometimes differ from my clinic?
Clinics may use different rounding rules, clock times, or embryo grading details. We show commonly used formulas for education.
Is my data stored?
Most tools run in your browser. Nothing is saved to a server unless you explicitly share or export.
Last reviewed: 9/29/2025