Pregnancy Due Date Calculator
Estimate a pregnancy due date and gestational weeks from the first day of the last period, with clear assumptions and clinical limitations.
This browser-based tool helps you use your own inputs to produce the result described above. Review the inputs, result labels, assumptions, and product guide before relying on the output.
Product collections
Related products
- Age Calculator — Calculate calendar age, elapsed days, and the next birthday from local date values.
- Date Difference Calculator — Calculate calendar and elapsed differences between two date-only values.
- Working Days Calculator — Count working, weekend, and manually excluded days using configurable calendars.