Date calculation · MC-123
Estimated due date / gestational age
Estimate gestational age and EDD from LMP or ultrasound dating
In development — calculation unavailable
This catalogue entry is not an approved clinical calculator. Its formula, interpretation and licensing have not been signed off. Do not use it to guide patient care.
- Intended population or setting
- Pregnancy
- Important cautions
- Ultrasound dating rules and ART conception dates supersede simple Naegele calculation in defined circumstances
- Specialities
- Family Medicine and Primary Care · Obstetrics and Gynecology · Pediatrics · Sexual and Reproductive Health
- Preferred source/version
- ACOG dating method hierarchy
- Review status
- Draft · Guideline verified
View catalogue source ↗Source links are provided for review; they are not necessarily hosted calculators.
When released, this tool will support but not replace professional clinical judgement. Check current local guidance and the original source before use.