Pregnancy Due Date CalculatorMath
Estimate your baby's due date and track your pregnancy progress based on your last period.
Due date
—
Weeks
—
Progress
—
Enter last period date
Capabilities & How-To Guide
Instructions, supported options, and client-side privacy guarantee.
Show GuideHide Guide
Capabilities & How-To Guide
Instructions, supported options, and client-side privacy guarantee.
Show GuideHide Guide
Planning for a new arrival? Our Online Due Date Calculator uses Naegele's Rule, the standard medical method for estimating the 40-week gestation period.
Pregnancy Milestones:
- First Trimester: Weeks 1-12. Crucial developmental phase.
- Second Trimester: Weeks 13-26. The "golden period" of pregnancy.
- Third Trimester: Week 27 to birth. Final preparation for delivery.
Need an extra feature or found an edge case?Send Feedback
Related tools
Other utilities people use next.
BMR Calculator
MathCalculate your Basal Metabolic Rate (BMR) to understand your body's energy needs at rest.
Open tool
Water Intake Calculator
MathCalculate how much water you should drink daily based on your weight and activity level.
Open tool
Body Fat Calculator
MathEstimate your body fat percentage using the US Navy method based on your body measurements.
Open tool