Pregnancy Calculators

About Pregnancy Calculators

Pregnancy Calculators is a new, growing category for tools related to pregnancy planning and tracking. It was previously part of Fitness & Health, and now has its own space as more pregnancy-specific tools are added.

The Pregnancy Due Date Calculator estimates your due date from the first day of your last menstrual period, using the standard 280-day (40-week) estimate and adjusting for your typical cycle length if it isn't 28 days. It also shows your current week and trimester.

This is an estimate based on a standard, widely-used method — not a substitute for dates confirmed by a doctor or ultrasound, which can be more accurate for your specific pregnancy.

If your cycle is longer or shorter than 28 days, entering the correct cycle length will adjust the estimate to better match your own timing.