How do I calculate my exact age?

Select your date of birth using the date picker. Your age in years, months, and days is calculated instantly based on today's date.

Can I calculate age as of a specific date?

Yes — toggle the "Calculate age as of" option and choose a target date. This is useful for calculating age at a past or future point in time.

How is the age calculated?

Age is calculated using JavaScript Date arithmetic: years are counted until the month and day match, then months are counted until the day matches, and remaining days complete the result.

When is my next birthday?

The calculator shows the number of days until your next birthday automatically below the main age result.

Age Calculator

Calculate your exact age in years, months, and days from your date of birth.

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Date of Birth

Calculate age as of a specific date

Select a date of birth to see your age.

How to Age Calculator

Select your date of birth using the date picker.
Your exact age in years, months, and days appears instantly.
Toggle "Calculate age as of a specific date" to find your age at any past or future date.
See total days lived, total weeks, and your next birthday countdown.

Why Use This Tool?

Sometimes you need more than just the year — knowing your exact age in months and days can matter for medical forms, legal documents, age-restricted content, or simply satisfying curiosity. This tool breaks down your age completely and shows how many days until your next birthday.

Age Calculator

How to Age Calculator

Why Use This Tool?

Frequently Asked Questions