Estimating a pregnancy due date is a simple date-calculation problem, but manually counting weeks and days can sometimes be confusing.
I recently worked on a small browser-based tool that makes this calculation easier.
The basic idea is straightforward:
- Start with the first day of the last menstrual period (LMP).
- Use the standard pregnancy-length estimate.
- Calculate the approximate expected due date.
- Display the result in a simple, mobile-friendly interface.
This is also a nice example of how JavaScript can be used for practical date calculations without requiring a backend or complicated setup.
I created a free online version here:
The calculator is intended for general informational purposes. Pregnancy dates can vary, so the result should not replace advice from a qualified healthcare professional.
I'm interested in building more small, useful browser tools with HTML, CSS and JavaScript. What kind of calculator or utility would be useful to you?
Top comments (0)