Pregnancy Calculator
Calculate due date, pregnancy progress, and important milestones with comprehensive tracking
Average menstrual cycle length
Optional: Additional Information
Pregnancy Timeline & Analysis
Pregnancy Progress
Current Development
Maternal Changes
Baby Size Comparison
Important Dates
Risk Assessment
Upcoming Milestones & Appointments
Calculation Method & Accuracy
Prenatal Care Schedule
Pregnancy Due Date Information
How Pregnancy Due Dates are Calculated
Pregnancy due dates are calculated based on the first day of your last menstrual period (LMP). The standard pregnancy length is 280 days (40 weeks) from the LMP, though only about 5% of babies are born exactly on their due date.
Pregnancy Trimesters
First Trimester
- • Weeks 1-12
- • Major organ development
- • Morning sickness common
- • Highest miscarriage risk
Second Trimester
- • Weeks 13-27
- • "Golden period" of pregnancy
- • Baby movements felt
- • Anatomy scan performed
Third Trimester
- • Weeks 28-40
- • Rapid weight gain
- • Preparation for birth
- • Frequent prenatal visits
Key Pregnancy Milestones
Week 4-6: First Prenatal Visit
Confirm pregnancy, establish due date, begin prenatal care
Week 11-14: First Trimester Screening
Nuchal translucency scan and blood tests
Week 18-22: Anatomy Scan
Detailed ultrasound to check baby's development
Week 24-28: Glucose Screening
Test for gestational diabetes
Due Date Accuracy
Important to Remember:
- • Only 5% of babies are born on their exact due date
- • Most babies are born within 2 weeks of the due date
- • First-time mothers often deliver later than the due date
- • Ultrasound dating may be more accurate than LMP dating
When to Call Your Doctor
Contact Healthcare Provider if:
- • Severe abdominal pain or cramping
- • Heavy bleeding or unusual discharge
- • Severe or persistent headaches
- • Signs of preterm labor before 37 weeks
- • Decreased fetal movement after 28 weeks
Pregnancy Timeline
| Week | Baby Size | Key Developments | Maternal Changes |
|---|---|---|---|
| 8 weeks | Raspberry | Major organs forming | Morning sickness peaks |
| 12 weeks | Plum | Fingers and toes formed | Energy may return |
| 20 weeks | Banana | Halfway point, movements felt | Belly shows |
| 32 weeks | Squash | Rapid brain development | Braxton Hicks contractions |
| 40 weeks | Watermelon | Full term, ready for birth | Labor signs begin |
Popular Calculators
Percentage Calculator
Calculate percentages, increases, and decreases
Loan Calculator
Calculate loan payments and interest
BMI Calculator
Calculate your Body Mass Index
Grade Calculator
Calculate your grades and GPA
Mortgage Calculator
Calculate mortgage payments
Age Calculator
Calculate your exact age
Fraction Calculator
Add, subtract, multiply fractions
Compound Interest Calculator
Calculate compound interest
Time Calculator
Add, subtract time durations
Calorie Calculator
Calculate daily calorie needs