Skip to main content
Explore Health Topics
Heart Health Diabetes Women's Health Pregnancy Digestive Health Mental Health
Medical Guides → • Calculators →
✓ Medically reviewed by Dr. Priya Sammani (MBBS, PG Dip. FM) | Age — · M/F · BMI —
88%
Clinical Tool • Pregnancy & Women’s Health ✓ Medically Reviewed by Dr. Priya Sammani (MBBS, Medical Officer)

Pregnancy Week Calculator

LMP

⚡ Auto-filled from your health data
🧬 My Health Data Edit Metrics ▾

📈 Result Spectrum

— Pregnancy Week Calculator
Normal
Normal Borderline High Risk

🩺 Recommended Articles

❓ 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+.

🧮 Related Calculators

🌸

Period Calculator

Free Period Calculator & Cycle Tracker. Enter your last period date and cycle le
🧬

Conception Calculator

EDD
🍼

IVF Due Date

Accurate IVF & Frozen Embryo Transfer (FET) Due Date Calculator. Calculate your

🧪

Pregnancy Test

Find out exactly when to take a home pregnancy test based on your last period an
👶

Baby Growth Percentile Calculator (WHO 0–5 Years)

Free WHO Baby Growth Percentile Calculator (0–5 years). Check your infant or tod
📏

Child Height Predictor

Predict how tall your child will grow using the pediatric Tanner Mid-Parental Ta
⚠️ Important: Medical Disclaimer: This clinical calculator provides educational estimates and does not replace a consultation with a qualified physician.
🔗 Embed This Clinical Calculator on Your Website (Free for Clinics, Universities & Blogs)

Copy and paste the HTML snippet below to embed this interactive South Asian clinical calculator on your website with attribution: