Pregnancy Due Date Calculator: What the Estimate Really Means

Important disclaimer

These tools are **educational only** and are **not medical advice**. Pregnancy dates should always be confirmed with a qualified doctor, midwife, or clinician. Ultrasound dating can differ from LMP estimates.

Why this is a hot topic

The moment someone sees a positive test, “when is my due date?” spikes in search. Clinics often start from last menstrual period (LMP) and a typical cycle length, then refine later with scans.

What a free calculator can do

A due date calculator turns LMP (+ cycle length when you have it) into an estimated due date and rough pregnancy timeline. It cannot replace prenatal care, dating scans, or emergency advice.

Try it privately

Use ToolPanda’s Due Date Calculator in your browser—no account upload of your dates: /tools/womens-health/due-date-calculator

Related

Pair with Pregnancy Week Calculator if you want week+day and trimester context.