Pregnancy Due Date Calculator
Calculate your estimated delivery date based on your LMP.
Estimated Due Date
Select date
Your Milestones & Tests
Please select a date to generate your personalized pregnancy timeline.
Clinical Foundations & Calculation Architecture: Pregnancy Due Date Calculator
Proactive wellness and fitness conditioning depend on reliable physiological mathematics. Our Pregnancy Due Date Calculator provides individuals, athletes, and nutritionists with immediate, clinically recognized calculations completely free of cost.
Physiological Models & Formulas
Depending on your selected metric, calculations are evaluated using validated clinical standards:
- Body Mass Index (BMI): Evaluated using the standard World Health Organization formula: \(\text{BMI} = \frac{\text{weight (kg)}}{(\text{height (m)})^2}\), categorizing results across Underweight (<18.5), Normal (18.5–24.9), Overweight (25–29.9), and Obese (≥30).
- Basal Metabolic Rate (BMR): Calculated using the Mifflin-St Jeor equation, widely acknowledged as the most accurate standard for predicting resting energy expenditure in healthy adults.
- Pregnancy Gestation: Based on Naegele’s clinical rule calculating estimated delivery dates 280 days from the onset of the last menstrual period (LMP).
100% In-Browser Biometric Security
Biometric variables such as body mass, age, and menstrual cycles constitute sensitive health metrics. While mobile apps frequently monetize personal health metrics through third-party advertising SDKs, Free Qube executes all calculations entirely in your browser's local sandbox memory. Zero biometric data points are ever logged, tracked, or sent to external servers.