Clinical Tool • Pregnancy & Women’s Health
✓ Medically Reviewed by Dr. Priya Sammani (MBBS, Medical Officer)
✓ Medically Reviewed by Dr. Priya Sammani (MBBS, Medical Officer)
Pregnancy Week Calculator
LMP
🧬 My Health Data Edit Metrics ▾
📈 Result Spectrum
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Pregnancy Week Calculator
Normal
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❓ Frequently Asked Questions (FAQ)
How do doctors calculate gestational age?
Obstetric gestational age is counted from the first day of your last menstrual period (LMP), spanning 40 weeks (280 days) to full term.
When do the three pregnancy trimesters start?
First trimester: Weeks 1–12; Second trimester: Weeks 13–27; Third trimester: Weeks 28–40+.
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⚠️ Important: Medical Disclaimer: This clinical calculator provides educational estimates and does not replace a consultation with a qualified physician.