Gestational Age Calculator

Calculate gestational age, pregnancy weeks, and estimated due date from last menstrual period or conception date.

Request Feature / Support

7,936+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how Gestational Age Calculator processes input data instantly inside your browser.

Sample Input Birth date: Jan 15, 1995, Target date: Oct 20, 2023

Computed Result Chronological Age: 28 Years, 9 Months, 5 Days (10,505 days elapsed)

Execution Mode Client-Side In-Browser JS

AI Web Tool Generator

Build Your Own Custom Web Calculator in Seconds

Type what tool or calculator you need below. Our AI will build it instantly for your site.

אודות כלי זה

This gestational age calculator helps you determine how many weeks and days pregnant you are based on your last menstrual period (LMP) or conception date. It provides accurate results including the current gestational age in weeks and days, the pregnancy trimester, and the estimated due date. The tool is designed for healthcare professionals, expectant parents, and anyone needing to track pregnancy progress with a simple, intuitive interface.

Save your calculation history with a free account

איך להשתמש

Select either 'Last Menstrual Period (LMP)' or 'Conception Date' as your input method.
Enter the date using the date picker or manual input.
Click the 'Calculate Gestational Age' button.
View the results including weeks, days, trimester, and due date in the result section below.

Frequently Asked Questions

מצא תשובות מהירות

What is gestational age?

Gestational age is the duration of pregnancy measured from the first day of the last menstrual period (LMP) to the current date, typically expressed in weeks and days.

How accurate is this calculator?

This calculator uses standard medical formulas (Naegele's rule for due date) and assumes a 28-day menstrual cycle. For precise medical advice, consult a healthcare provider as individual factors may vary.

Can I use conception date instead of LMP?

Yes, you can select 'Conception Date' as the input method. The calculator will add 266 days (38 weeks) to estimate the due date and calculate gestational age accordingly.

What is Naegele's rule?

Naegele's rule is a standard method to estimate due date: add 7 days to the first day of the last menstrual period, then subtract 3 months. This calculator applies it when using LMP.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

Related Tools

Other useful calculators and utilities you might like

ממיר Spotify ל-MP3

ממיר קבצי שמע מסופקים מקומית ל-MP3, מאפשר האזנה offline ותאימות בין מכשירים למוזיקה בבעלות חוקית ואח...

מחשב מרחק דרך

מחשב מרחק דרך למטיילים, מתכנני לוגיסטיקה ונהגים כדי להעריך במהירות מרחקים וזמן בין מקומות.

מחשבון גיל

קבע במהירות את גיל האדם מבוסס על תאריך הלידה שלו עם המחשבון החינמי שלנו באינטרנט, מתאים לשימוש אישי...

הממיר מטבעות

המיר במהירות סכומים בין מטבעות שונים עם הממיר חינם שלנו, מתאים לנסיעות, עסקים וקונים בינלאומיים.

המשוב שלך חשוב

עזור לנו לשפר