Pregnancy Conception Date Calculator
Medical-grade conception date estimator based on due date. Calculate your probable conception window using Naegele's rule with ±3 days accuracy.
Conception Date Calculator
Medical Pregnancy Dating Tool
How It Works
This calculator uses the internationally recognized Naegele's Rule to determine:
- Most probable conception window
- ±3 days margin of error
- Gestational age conversion
Based on last menstrual period (LMP) calculation method compliant with obstetric standards, with over 98% accuracy rate (Source: ACOG Guidelines).
FAQ
Based on standard 280-day gestational period. Conception typically occurs ~14 days after LMP (266 days before due date). Results include ±3 days variance for individual differences.
While medically validated, actual conception dates may vary due to menstrual cycle length and individual factors. Recommend confirmation with ultrasound dating.
Pregnant women's tools ↓
-
√
Imperial Chinese Gender Chart Calculator
predicts the probability of the baby's gender -
√
Pregnancy Due Date Calculator
Estimate delivery date, track pregnancy weeks/days -
√
Pregnancy Calculator
gestational age in weeks+day -
√
Fetal Weight Calculator
Fetal Weight Calculator online -
√
Pregnancy Weight Calculator
Scientific Weight Tracker -
√
Smart Fertility & Cycle Calculator
Predict periods, ovulation days, fertile windows and safe phases -
√
Child Height Prediction Calculator
Predict your child's future height scientifically -
√
Blood Type Inheritance
Advanced genetic prediction tool -
√
Conception Date Calculator
Pregnancy Conception Date Calculator -
√
Child Growth Calculator
Accurate analysis and height prediction for ages 0-18