Free Pregnancy Calculator Online
Calculate pregnancy due date, gestational age, trimester, conception estimate, pregnancy week, important milestones, and estimated delivery date with this free pregnancy calculator.
🤰 Pregnancy Calculator
Live Due Date EstimatePregnancy Inputs
Left SidePregnancy Results
Right SidePregnancy Progress Pie Chart
| Milestone | Estimated Date | Pregnancy Week |
|---|
A due date is an estimate, not an exact delivery date.
Last period, conception, due date, and ultrasound methods can differ.
Confirm pregnancy dates and health questions with a qualified clinician.
What Is a Pregnancy Calculator?
A pregnancy calculator estimates due date, gestational age, pregnancy week, trimester, conception date, days remaining, pregnancy progress, and important pregnancy milestones. It can calculate dates from the last menstrual period, estimated conception date, known due date, or ultrasound dating.
This free online due date calculator is useful for planning appointments, understanding pregnancy weeks, reviewing trimester dates, and estimating an expected delivery date. It provides general date estimates only.
Due Date Calculator
Estimate expected delivery date from last period, conception, due date, or ultrasound data.
Gestational Age Calculator
Calculate pregnancy age in weeks and days for a selected check date.
Pregnancy Week Calculator
See the current pregnancy week, trimester, and days remaining.
Pregnancy Milestone Calculator
Generate an estimated milestone table for trimesters and key pregnancy weeks.
How Pregnancy Date Calculation Works
Pregnancy due date is often estimated as 280 days from the first day of the last menstrual period. If conception date is used, the calculator adds about 266 days. Ultrasound dating uses the scan date and estimated pregnancy age on that date.
Pregnancy Calculator Formula
The calculator also estimates gestational age by comparing the selected check date with the calculated pregnancy start date.
Gestational Age vs Pregnancy Week
Gestational age is usually shown in completed weeks and days, such as 12 weeks and 3 days. Pregnancy week may be shown as the next labeled week, such as week 13 when 12 full weeks have passed.
Pregnancy Calculator Examples
Enter the first day of the last period to estimate due date and week.
Enter an estimated conception date to calculate an estimated delivery date.
Enter scan date and pregnancy age from ultrasound to estimate dates.
Benefits of Using a Pregnancy Calculator
Estimate important pregnancy dates for personal planning.
Understand gestational age and current pregnancy week.
Review estimated trimester and pregnancy milestone dates.
Pregnancy Planning Tips
- Use the result as an estimate rather than an exact delivery date.
- Confirm important dates with a qualified clinician.
- Keep track of the dating method used because methods can differ.
- Seek medical care promptly for urgent symptoms or concerns.
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Frequently Asked Questions
Is this pregnancy calculator free?
Yes. You can estimate due date, pregnancy week, gestational age, trimester, and milestones for free.
How is pregnancy due date calculated?
A common method adds 280 days to the first day of the last menstrual period.
Can I calculate from conception date?
Yes. The calculator can estimate due date from an estimated conception date.
Can I use ultrasound dating?
Yes. Enter the ultrasound date and pregnancy age shown on the scan.
What is gestational age?
Gestational age is the estimated pregnancy age, usually shown in weeks and days.
Are due dates exact?
No. Due dates are estimates and actual delivery dates can vary.
Does this replace medical advice?
No. Confirm pregnancy dates and health questions with a qualified clinician.
Can I export the milestone table?
Yes. Use the Download CSV button to export estimated pregnancy milestones.