NHS-style estimator
Estimate your due date and key pregnancy milestones
Based on the first day of your last period, with a cycle-length correction for a more personalized estimated due date.
Pregnancy Due Date Calculator
Enter the first day of your last period and your cycle length. The calculator applies the standard 280-day rule, then adjusts for your cycle length.
Estimated due date
Thursday, July 8, 2027
Your adjusted EDD uses the standard 280-day rule plus cycle-length correction.
Current pregnancy age
Pregnancy dating begins today
Calculated from the first day of your last period and the current date.