Datetime.app

Age Calculator

Calculate your exact age in years, months, days, and more - with flexible date input options

Calculate Your Age
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Current Date & Time

2025-06-11 14:57:23

Updates in real-time

About Age Calculation

Calendar Precision

Our age calculator accounts for leap years, varying month lengths, and daylight saving time changes to provide the most accurate calculation possible.

Real-time Updates

Once you select your birth date, the calculator updates in real-time, showing your age down to the second as time passes.

Age Calculator - Frequently Asked Questions

Age is calculated by determining the time elapsed between your birth date and the current date (or a custom date you specify). Our calculator provides the precise age in years, months, days, hours, minutes, and seconds. We account for leap years, varying month lengths, and other calendar complexities to ensure accuracy.

Age is calculated by determining the time elapsed between your birth date and the current date (or a custom date you specify). Our calculator provides the precise age in years, months, days, hours, minutes, and seconds. We account for leap years, varying month lengths, and other calendar complexities to ensure accuracy.

Age calculations can vary slightly between different calculators due to how they handle partial months and days. Some calculators might round to the nearest year, while others (like ours) provide a more detailed breakdown including months and days. Our calculator uses precise algorithms to account for leap years and varying month lengths.

Age calculations can vary slightly between different calculators due to how they handle partial months and days. Some calculators might round to the nearest year, while others (like ours) provide a more detailed breakdown including months and days. Our calculator uses precise algorithms to account for leap years and varying month lengths.

Yes! Our calculator allows you to calculate age between any two dates. Simply enter your birth date and then toggle the 'Use custom date' option to specify the target date for the age calculation. This is useful for determining how old you were (or will be) on a specific date.

Yes! Our calculator allows you to calculate age between any two dates. Simply enter your birth date and then toggle the 'Use custom date' option to specify the target date for the age calculation. This is useful for determining how old you were (or will be) on a specific date.

You have two options for entering your birth date: using the calendar picker or manual input. The calendar picker allows you to select a date visually, while manual input lets you type in the year, month, and day directly. Choose whichever method is more convenient for you.

You have two options for entering your birth date: using the calendar picker or manual input. The calendar picker allows you to select a date visually, while manual input lets you type in the year, month, and day directly. Choose whichever method is more convenient for you.

Our age calculator is accurate to the second. It updates in real-time (when using current date) and takes into account leap years, different month lengths, and daylight saving time changes. For most practical purposes, this level of precision is more than sufficient.

Our age calculator is accurate to the second. It updates in real-time (when using current date) and takes into account leap years, different month lengths, and daylight saving time changes. For most practical purposes, this level of precision is more than sufficient.

Decimal age represents your age as a single number with a decimal portion, rather than separate years, months, and days. For example, 25.75 years means you are 25 years and 9 months old (since 0.75 years equals about 9 months). This format is sometimes used in scientific or medical contexts.

Decimal age represents your age as a single number with a decimal portion, rather than separate years, months, and days. For example, 25.75 years means you are 25 years and 9 months old (since 0.75 years equals about 9 months). This format is sometimes used in scientific or medical contexts.

Knowing your exact age can be useful for various purposes: medical assessments, astrological calculations, legal documentation, or simply satisfying curiosity. Some cultures also celebrate specific age milestones that require precise calculation.

Knowing your exact age can be useful for various purposes: medical assessments, astrological calculations, legal documentation, or simply satisfying curiosity. Some cultures also celebrate specific age milestones that require precise calculation.

The Next Birthday calculation is based on the current date and shows how many days until your next birthday from today. When using a custom target date, this information isn't shown because it wouldn't be relevant to the custom date you've specified.

The Next Birthday calculation is based on the current date and shows how many days until your next birthday from today. When using a custom target date, this information isn't shown because it wouldn't be relevant to the custom date you've specified.