Calculate your estimated due date from an ultrasound scan by entering the date of the scan and the gestational age the sonographer measured, usually reported in weeks and days. Early ultrasounds, especially those in the first trimester based on the crown rump length, are considered the most accurate way to date a pregnancy, often more reliable than counting from your last period if your cycles are irregular. This tool takes the scan date and the measured gestational age, works forward to the full 40 week point to give your estimated due date, and also shows how many weeks and days along you are today. Enter the scan date and the reported gestational age to see your due date and current progress. Everything is calculated in your browser, and this is general information, not medical advice. Your provider uses the full clinical picture to confirm and sometimes adjust your official due date.
Calculate your estimated due date from an ultrasound scan by entering the date of the scan and the gestational age the sonographer measured, usually reported in weeks and days. Early ultrasounds, especially those in the first trimester based on the crown rump length, are considered the most accurate way to date a pregnancy, often more reliable than counting from your last period if your cycles are irregular.
Yes. Due Date From Ultrasound Calculator is completely free, with no sign-up and no usage limits.
Yes. Due Date From Ultrasound Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Due Date From Ultrasound Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.