Calculate your due date, pregnancy week, and key milestones from your last menstrual period or conception date.
What is the Pregnancy Calculator?
The Pregnancy Calculator is a free, science-backed health calculator that uses clinically validated formulas to deliver accurate, instant results. Used by fitness enthusiasts, healthcare professionals, and individuals tracking their wellness journey worldwide.
Explore our complete Health & Fitness calculator suite including the BMI Calculator, Calorie Calculator, and Body Fat Calculator.
⚠️ Medical Disclaimer: This calculator is for informational and educational purposes only. It does not constitute medical advice. Always consult a qualified healthcare professional before making health-related decisions.
📐 Formula & Methodology
Due Date = LMP + 280 days (Naegeles Rule)nConception ≈ LMP + 14 days
How the Pregnancy Calculator Works
This calculator applies scientifically validated health formulas developed and peer-reviewed by medical researchers. The methodology follows guidelines from organizations like the World Health Organization (WHO), Centers for Disease Control (CDC), and leading health research bodies.
Who Uses the Pregnancy Calculator?
- Fitness beginners — establish your baseline before starting a new health program
- Athletes and coaches — monitor training metrics and optimize performance
- Healthcare professionals — quick reference tool for patient consultations
- Personal trainers — assess clients and track their transformation journeys
- Nutritionists — combine with our Calorie Calculator and Macro Calculator
- Health-conscious individuals — monitor key metrics and maintain wellness goals
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💚 Tips for Accurate Health Measurements
- Measure in the morning before eating for consistent, comparable readings
- Use metric units (kg/cm) for greater precision — toggle in the navigation
- Take measurements 3 times and use the average to reduce error
- Track weekly rather than daily — weekly trends are more meaningful than daily fluctuations
- Pair with our Calorie Calculator for a complete nutrition and fitness picture