Pregnancy Due Date Calculator (LMP-based)

Estimate your baby's due date instantly using our LMP-based Chrome extension. Accurate, easy, and medically backed.

𝗣𝗿𝗲𝗴𝗻𝗮𝗻𝗰𝘆 𝗗𝘂𝗲 𝗗𝗮𝘁𝗲 𝗖𝗮𝗹𝗰𝘂𝗹𝗮𝘁𝗼𝗿 (𝗟𝗠𝗣-𝗯𝗮𝘀𝗲𝗱) Calculate your baby's due date with medical accuracy using our trusted LMP-based calculator. This Chrome extension provides instant, reliable pregnancy due date estimates based on your Last Menstrual Period (LMP) - the gold standard method used by healthcare professionals worldwide. 𝗞𝗲𝘆 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀 • 𝗜𝗻𝘀𝘁𝗮𝗻𝘁 𝗖𝗮𝗹𝗰𝘂𝗹𝗮𝘁𝗶𝗼𝗻𝘀: Get your due date in seconds with our streamlined interface • 𝗠𝗲𝗱𝗶𝗰𝗮𝗹 𝗔𝗰𝗰𝘂𝗿𝗮𝗰𝘆: Based on Naegele's rule (LMP + 280 days), the standard method used by obstetricians • 𝗨𝘀𝗲𝗿-𝗙𝗿𝗶𝗲𝗻𝗱𝗹𝘆 𝗗𝗲𝘀𝗶𝗴𝗻: Clean, intuitive interface that's easy to navigate • 𝗡𝗼 𝗥𝗲𝗴𝗶𝘀𝘁𝗿𝗮𝘁𝗶𝗼𝗻 𝗥𝗲𝗾𝘂𝗶𝗿𝗲𝗱: Privacy-focused - no personal data collection or storage • 𝗢𝗳𝗳𝗹𝗶𝗻𝗲 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝗮𝗹𝗶𝘁𝘆: Works without internet connection once installed • 𝗖𝗿𝗼𝘀𝘀-𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 𝗖𝗼𝗺𝗽𝗮𝘁𝗶𝗯𝗶𝗹𝗶𝘁𝘆: Seamlessly integrates with Chrome browser 𝗛𝗼𝘄 𝗜𝘁 𝗪𝗼𝗿𝗸𝘀 Simply enter your Last Menstrual Period date, and our calculator instantly provides your estimated due date. The calculation follows the standard obstetric formula: LMP date + 280 days (40 weeks), which accounts for the typical 266-day gestation period plus 14 days for the average time from LMP to ovulation. 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗢𝘂𝗿 𝗖𝗮𝗹𝗰𝘂𝗹𝗮𝘁𝗼𝗿 • 𝗠𝗲𝗱𝗶𝗰𝗮𝗹𝗹𝘆 𝗕𝗮𝗰𝗸𝗲𝗱: Uses the same calculation method as healthcare providers • 𝗥𝗲𝗹𝗶𝗮𝗯𝗹𝗲 𝗥𝗲𝘀𝘂𝗹𝘁𝘀: Trusted by thousands of expectant parents • 𝗤𝘂𝗶𝗰𝗸 𝗔𝗰𝗰𝗲𝘀𝘀: Always available in your browser toolbar • 𝗣𝗿𝗶𝘃𝗮𝗰𝘆 𝗙𝗶𝗿𝘀𝘁: Your data stays on your device - we don't collect or store any personal information 𝗣𝗲𝗿𝗳𝗲𝗰𝘁 𝗙𝗼𝗿 • Expectant parents wanting to know their due date • Healthcare professionals needing quick calculations • Anyone planning for pregnancy milestones • Educational purposes in reproductive health 𝗔𝗱𝗱𝗶𝘁𝗶𝗼𝗻𝗮𝗹 𝗥𝗲𝘀𝗼𝘂𝗿𝗰𝗲𝘀 Visit our full pregnancy tracker at pregnancy-calculator.js2ts.online for comprehensive week-by-week pregnancy information, developmental milestones, and helpful tips throughout your pregnancy journey. 𝗜𝗻𝘀𝘁𝗮𝗹𝗹𝗮𝘁𝗶𝗼𝗻 1. Click "Add to Chrome" to install the extension 2. The calculator icon will appear in your browser toolbar 3. Click the icon to open the calculator 4. Enter your LMP date and get instant results 𝗦𝘂𝗽𝗽𝗼𝗿𝘁 For questions or support, visit our website or contact us through the provided channels. We're committed to providing accurate, helpful tools for your pregnancy journey. 𝗗𝗶𝘀𝗰𝗹𝗮𝗶𝗺𝗲𝗿 This calculator provides estimates based on standard medical formulas. Always consult with your healthcare provider for personalized medical advice and confirm your due date through professional prenatal care. Individual pregnancies may vary, and your healthcare provider may adjust your due date based on ultrasound measurements and other factors.