🧬 Fertility Tool

Implantation Calculator

Estimate when implantation may occur and when to take a pregnancy test, based on ovulation, IVF transfer, or your last menstrual period.

Select calculation method:

Ovulation Date

How implantation works

Implantation is the process where a fertilized egg attaches to the lining of the uterus. It typically occurs 6–10 days after ovulation. After implantation, the body begins producing hCG, which pregnancy tests detect. A test taken too early may give a false negative.

⚠️ This calculator provides estimated timing based on average biological patterns and should not replace professional medical advice.