Due Date Calculator
Calculate estimated due date from last menstrual period.
How to Use the Due Date Calculator
- Enter the date of your last menstrual period.
- Click Calculate to compute your estimated due date.
- Review your due date and the corresponding pregnancy week milestones.
- Use the result to plan prenatal appointments and trimester timelines.
Quick Reference
| From | To |
|---|---|
| 1st trimester | Weeks 1–12 |
| 2nd trimester | Weeks 13–26 |
| 3rd trimester | Weeks 27–40 |
| Due date | 40 weeks (280 days) |
| Full term | 37–42 weeks |
| Preterm | < 37 weeks |
Use Cases
- •Monitoring personal health metrics as part of a wellness routine.
- •Setting evidence-based goals for diet, exercise, or weight management.
- •Preparing for a medical appointment with baseline body measurements.
- •Tracking changes in body composition over time.
Formula
Calculate estimated due date from last menstrual period.
Frequently Asked Questions
How to use?
Enter the date of your last menstrual period and click Calculate to see your estimated due date.
Calculation accuracy?
Calculations are performed with high precision.
Is it free?
Yes, all calculators are completely free.