Pregnancy Calculators
Pregnancy calculators and planning tools
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About Pregnancy Calculators
Plan your pregnancy with free calculators. Estimate your due date, track your week of pregnancy, and plan key milestones and appointments.
Pregnancy is full of dates to keep track of. These tools apply standard timing so you can plan with confidence — always alongside your provider’s advice.
Frequently Asked Questions
How is my due date calculated?▼
The due date calculator counts 280 days (40 weeks) from the first day of your last period, or adjusts from a conception or ultrasound date.
How accurate are due-date estimates?▼
They are estimates; only about 1 in 20 babies arrives exactly on the due date. Treat it as a guide and follow your provider’s assessment.
Are these tools a substitute for medical care?▼
No. They are planning aids based on standard guidance. Consult your healthcare provider for medical decisions.