Pregnancy Conception Calculator
Calculate your conception date, due date, and track your pregnancy progress with our easy-to-use calculator
Calculate Your Conception Date
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About Pregnancy Calculation
Pregnancy is typically calculated from the first day of your last menstrual period (LMP), which is about 2 weeks before conception actually occurs. This calculator estimates:
- Conception date: Typically 11-21 days after the first day of your LMP
- Due date: Approximately 40 weeks from your LMP (38 weeks from conception)
- Trimester timeline: Pregnancy is divided into three trimesters of about 13-14 weeks each
Note: This calculator provides estimates only. For precise dating, consult with your healthcare provider who may use ultrasound measurements.
Frequently Asked Questions
How accurate is the conception calculator?
The calculator provides an estimate based on average cycle lengths. Actual conception may vary based on individual factors.
Why is pregnancy calculated from the last period?
This method is used because most people know when their last period started, but rarely know the exact date of conception.
What if my cycle isn’t 28 days?
You can adjust the cycle length using the slider. The calculator will adjust the conception date accordingly.
This tool is for informational purposes only. Always consult with healthcare professionals for medical advice.
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