Conception Calculator
Worked example result
| Estimated conception date | January 15, 2026 |
| Estimated last period (LMP) | January 1, 2026 |
For a due date of October 8, 2026, conception is estimated around January 15, 2026, with the last period starting around January 1, 2026.
Conception ≈ due date − 266 days · Estimated LMP ≈ due date − 280 days · Powered by CalcHub — Conception Calculator