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Conception Date Calculator

Estimate conception date and fertile window from last period, cycle length, and luteal phase, with an approximate due date shown too.

Conception Date Calculator


Result will appear here...


Last updated: April 7, 2026

Created by: Eon Tools Dev Team

Reviewed by: Dr. Ashish Lamichhane





Dr. Ashish Lamichhane

Dr. Ashish Lamichhane is an MBBS doctor currently serving as an ASBA medical officer and hospital chief, with a background in general medicine and clinical practice. His work brings real world medical perspective to health related calculation tools and everyday decision support utilities. At Eon Tools, he reviews health tools.