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Age Calculator online

Calculate your exact age in years, months, days, hours and minutes

Age Calculator logo
by
CHUNKY
MUNSTER

How to Use age-calculator

  1. Enter your date of birth using the date picker.
  2. The tool instantly calculates your age in years, months, days, hours, and minutes.
  3. Optionally enter a target date to calculate age at a specific point in time.
  4. Read your next birthday countdown in the summary row below.

Age calculation is trickier than it looks — leap years, varying month lengths, and timezone boundaries all affect the result. This calculator handles all of them correctly, computing your exact age down to the minute and showing how many days remain until your next birthday.

How Age Calculation Works

The calculator subtracts your birth date from today (or your chosen reference date) using a calendar-aware algorithm that respects leap years and month-length differences. It expresses the result in multiple units simultaneously — years + months + days as the primary result, plus total days and approximate hours for additional context.

Frequently Asked Questions

Why do different sites give slightly different ages?

Some calculators floor the month count; others round. This tool computes the precise calendar difference — for example, someone born on 31 March is not "1 month old" until 30 April (the last day of April), since April has no 31st.

Does it account for leap years?

Yes. The algorithm uses JavaScript's Date object which handles the Gregorian calendar correctly, including leap day exceptions for century years.

Can I calculate the age of a company, building, or event?

Absolutely — just enter the founding or construction date as the "birth date." The tool is not limited to people.

Does timezone affect the result?

The calculator uses your browser's local date for "today," which reflects your device timezone. If you need a specific timezone, enter a custom reference date.

Use the Date Calculator for date arithmetic or Days Until for event countdowns.