Pregnancy Month Calculator

Calculate how many months pregnant you are with detailed trimester breakdown

Pregnancy Progress Summary

X months pregnant

XX weeks, X days

You are in the Xst trimester of pregnancy.

0 monthsX of 9 months9 months

Your Pregnancy Month Breakdown

Month	Week Range	Weeks Pregnant	Trimester
Month 1	Weeks X-X	XX weeks, X days	Xst Trimester
Month 2	Weeks X-X	XX weeks, X days	Xst Trimester
Month 3	Weeks X-X	XX weeks, X days	Xst Trimester
Month 4	Weeks X-X	XX weeks, X days	Xst Trimester
Month 5	Weeks X-X	XX weeks, X days	Xst Trimester

Enter your last menstrual period date or conception date to calculate how many months pregnant you are.

Get a complete month-by-month breakdown of your pregnancy with trimester information.

Calculate important pregnancy information:

• Current pregnancy month and trimester
• Month equivalence table
• Pregnancy progression percentage
• Detailed trimester breakdown

How to Calculate Pregnancy Months

Our pregnancy month calculator converts your pregnancy weeks into months using the standard medical approach. Unlike calendar months, pregnancy months are based on 4-week cycles, which is why a full-term pregnancy is 40 weeks but only 9 months.

Each pregnancy month represents approximately 4.3 weeks, providing a more intuitive way to track your pregnancy progress alongside the precise weekly measurements used by healthcare providers.

Why Use a Pregnancy Month Calculator?

Easy Progress Tracking

Months provide an intuitive way to understand your pregnancy progress. Perfect for sharing updates with family and planning pregnancy milestones.

Trimester Organization

See exactly which trimester you're in and understand the major developmental phases of your pregnancy journey.

Month-by-Month Planning

Plan appointments, purchases, and preparations based on pregnancy months rather than complicated week calculations.

Universal Understanding

Most people think in terms of months when discussing pregnancy, making it easier to communicate your progress.

Understanding Pregnancy Trimesters

Pregnancy is divided into three trimesters, each with distinct characteristics and milestones. Our calculator shows you exactly which trimester you're in and what to expect.

Trimester Breakdown:

• First trimester: Months 1-3 (Weeks 1-13)
• Second trimester: Months 4-6 (Weeks 14-26)
• Third trimester: Months 7-9 (Weeks 27-40)
• Full-term pregnancy: 9 months = 40 weeks

Frequently Asked Questions

Why is pregnancy 9 months but 40 weeks?

Pregnancy months are based on 4.3-week cycles rather than calendar months. This is why 40 weeks equals approximately 9.3 pregnancy months, commonly rounded to 9 months.

Which trimester is the best time during pregnancy?

Many women find the second trimester (months 4-6) to be the most comfortable. Morning sickness often subsides, energy levels improve, and you're not yet feeling the physical discomfort of late pregnancy. This is often called the "golden months" of pregnancy.

How accurate is the pregnancy month calculator?

Our calculator uses the same method as healthcare providers, converting weeks to months using standard medical calculations. While very accurate, individual pregnancies may vary slightly, so always confirm with your healthcare provider.