Pregnancy Due Date Calculator
Estimate your pregnancy due date quickly and accurately using our free online calculator based on your last menstrual period date.

Check It Yourself
About This Tool
Our Pregnancy Due Date Calculator helps women and healthcare professionals estimate the expected date of delivery by inputting the last menstrual period (LMP) date. The calculator automatically adds 280 days (or user-defined cycle length) to provide a reliable due date estimate. Users can also adjust for cycle variations, view pregnancy duration in weeks and days, and get an overview of the pregnancy timeline. This tool simplifies pregnancy planning and tracking, making it accessible for medical practice, pregnancy education, or personal tracking.
Designed with user-friendliness in mind, it features an intuitive form, responsive design, and instant results. Healthcare providers can use it for quick assessments, while expecting mothers benefit from easy-to-understand outputs. Key functionalities include validation of dates, support for alternate cycle lengths, and options for exporting results. Whether for clinical use, pregnancy planning, or educational purposes, this calculator improves accuracy and saves time.
Use the tool by entering your last menstrual period date and optional cycle length. Click calculate to see your due date, pregnancy duration, and gestational age. It’s a reliable, accessible, and informative resource for pregnancy management and education.
How to Use
1. Select or enter your last menstrual period date using the date picker.
2. Optionally, adjust your cycle length (default is 28 days).
3. Click the 'Calculate' button.
4. View the estimated due date and pregnancy details in the results panel.
5. Copy or export results, or reset inputs to try again.

FAQs/Additional Resources
Find Quick Answers
How is the due date calculated?
Can I adjust for irregular cycles?
What if I input an invalid date?
Is this tool suitable for medical diagnosis?
Can I save or share my results?
User Reviews
See What Others Are Saying
Explore Related Tools
More Solutions for Your Needs
Octal Calculator
A free online octal calculator for converting and calculating octal numbers, ideal for students, programmers, and digital electronic applications.
Forex Calculator for OctaFX
A free online forex calculator tailored for OctaFX traders to quickly compute lot sizes, pip values, and potential profit or loss for trades.
Your Feedback Matters
Help Us to Improve