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Pregnancy Due Date Calculator

Use this free pregnancy due date calculator for fast, clear results on any device.

First day of last period

First trimester endsWeek 13

Second trimester endsWeek 27

Estimated due date25 Jul 2027

Pregnancy Due Date Calculator: Complete Guide

This health tool provides a quick starting point for planning and everyday decisions. Review the assumptions, adjust the inputs, and use the result as an estimate.

Calculation Formula

Estimated due date = First day of last menstrual period + 280 days.

Frequently Asked Questions

Are these results exact?

This health tool is for general information and is not medical advice.

CALCULATOR GUIDE

Understand Pregnancy Due Date Calculator

Explore the formula, worked examples and practical explanations behind this calculator.

About this calculator

Use the calculator above to explore different scenarios. Update this guide, examples, search metadata, and FAQs directly from the admin panel whenever your content needs to change.

COMMON QUESTIONS

Frequently Asked Questions

Clear answers to help you understand your results.

01How does the Pregnancy Due Date Calculator work?

This calculator uses: Estimated due date = First day of last menstrual period + 280 days.

02Is the Pregnancy Due Date Calculator free to use?

Yes. This online calculator is free to use on desktop and mobile devices.

03Are the results guaranteed?

The result is an estimate based on the values you provide. Verify important financial, health, or technical decisions with a qualified professional.