Age Month Day Calculator



Calculating age in months and days is a common requirement, especially in fields like healthcare and child development. In this article, we’ll provide a simple and efficient Age Month Day Calculator using HTML and JavaScript. This calculator allows users to input their birthdate and get the precise age in months and days.

How to Use

  1. Enter your birthdate in the provided input field.
  2. Click the “Calculate” button to obtain your age in months and days.


The formula for calculating age in months and days is derived from the difference between the current date and the user’s birthdate. The result is then converted into months and days.


Suppose a user was born on January 1, 1990. After entering this date and clicking “Calculate,” the result might be displayed as “Age: 32 years, 11 months, 14 days.”


Q: Can I use this calculator for historical dates?

A: Yes, the calculator considers both past and future dates.

Q: How accurate is the age calculation?

A: The calculation is accurate, accounting for variations in months and days in different years.

Q: What if I enter an incorrect date format?

A: The calculator validates the date format, ensuring accurate calculations. Enter the date in the format YYYY-MM-DD.

Q: Can I use this calculator on a mobile device?

A: Absolutely, the calculator is designed to be responsive and works seamlessly on both desktop and mobile devices.


In conclusion, the Age Month Day Calculator provides a quick and accurate way to determine one’s age in months and days. Whether for medical purposes or simple curiosity, this tool is user-friendly and efficient.

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