Pregnancy Due-Date Calculator
Pregnancy Due-Date Calculator helps you calculate estimated due date from last menstrual period quickly with transparent formulas.
Formula
Due = LMP + 280 days
Step-by-step
- Use 280-day standard gestation estimate.
Example
Using default values, result: Approx. 224 days remaining
Frequently asked questions
How accurate is the Pregnancy Due-Date Calculator?
Results are estimate-grade and depend on your inputs and assumptions.
Can I use Pregnancy Due-Date Calculator for professional decisions?
Use this as guidance and verify with a qualified professional when stakes are high.
For educational purposes only. Results are estimates, not professional advice.
Last reviewed: 2026-07-14