Pregnancy Due Date Calculator

Estimate pregnancy due date from last menstrual period or conception date. Use this free browser-based pregnancy due date calculator from XTRAW Tools.

Pregnancy Due Date Calculator helps you estimate pregnancy due date from last menstrual period or conception date. Use this free browser-based calculator from XTRAW Tools to compare inputs, estimate results, and plan your next step.

How to Use the Pregnancy Due Date Calculator

Enter the required calculator inputs shown in the form.
Review the measurement, date, time, activity, body, nutrition, or training assumptions.
Run the calculator, then adjust one input at a time to compare scenarios.

What This Calculator Helps With

Estimate pregnancy due date from last menstrual period or conception date. It is designed for expecting parents, pregnancy planners, family users, and wellness reference users who want a fast, browser-based estimate before relying on a doctor, dietitian, trainer, coach, pregnancy care provider, public safety source, or other professional source.

Last Menstrual Period: 2026-01-01
Cycle Length: 28 days

Common Uses

People use this calculator when they need a quick way to estimate health, wellness, fitness, nutrition, timing, body composition, or training values from simple inputs.

Health Estimate: Create a quick wellness, fitness, nutrition, pregnancy, or body-measurement estimate from entered values.
Time Tracking: Estimate timing, cycle, due-date, pace, bedtime, or schedule-related outcomes.

Formula or Method

Estimated Due Date = Last Menstrual Period + 280 days, or conception date + 266 days.

Example

Example inputs: Last Menstrual Period: 2026-01-01; Cycle Length: 28 days

Example result: Using the default LMP date, the estimated due date is October 8, 2026.

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Pregnancy Due Date Calculator FAQ

Is the Pregnancy Due Date Calculator free?

Yes. This calculator is free to use on XTRAW Tools.

Do I need to create an account?

No. XTRAW tools are designed for browser-based use without requiring an account.

Are the results exact?

Results may be estimates depending on the inputs, formula, and purpose of the calculator. Always verify important results before relying on them.

Disclaimer: This calculator is provided for general informational and convenience purposes only. It is not legal, financial, medical, tax, investment, insurance, accounting, pregnancy, health, fitness, nutrition, safety, or professional advice. Always verify important results with a qualified professional or authoritative source before making decisions.