Handytool
UtilityRuns locally

Age calculator

Calculate your exact age in years, months, days, weeks, hours and minutes — from any birthday to any reference date.

Defaults to today. Change it to calculate age on any day.

Result

Enter a date of birth to see the calculation.

Everything is calculated locally in your browser. No dates are sent to a server.

About the Age calculator

Handytool's age calculator works out exactly how old you are from a date of birth — down to the day. Enter your birthday and an optional reference date, and you'll see your age in years, months and days, plus your total days, weeks, hours and minutes lived, the day of the week you were born, and how many days are left until your next birthday. Everything runs in your browser, so no personal data is sent to a server.

Age calculator features

  • 01

    Age in years, months and days

    See your calendar age broken down into years, months and remaining days — the same format used on official forms and hospital records. No rounding, no approximations.

  • 02

    Days, weeks, hours and minutes lived

    Get the total count of days, weeks, hours and minutes you've been alive, plus the exact weekday you were born on. Great for milestone birthdays or memorial planning.

  • 03

    Days until next birthday

    The calculator counts down to your next birthday so you know when to start planning. Change the reference date to see how old you'll be on any future (or past) day.

Age calculator FAQ

How do I calculate my exact age?
Enter your date of birth and, if you want, a reference date. The calculator returns your exact age in years, months and days plus the total number of days, weeks, hours and minutes you have lived. Everything runs in your browser.
How many days have I lived?
Pick your birthday and leave the reference date as today. The total days field shows exactly how many days have passed since you were born, including leap days.
Can I calculate age on a specific date?
Yes. Change the reference date to any past or future day, and the calculator will show how old you will be — or were — on that day. Useful for retirement planning or historical questions.
Which day of the week was I born on?
The calculator displays the weekday of your birth automatically. It uses your browser's local calendar, so the answer matches any printed birth certificate.
Is my date of birth saved anywhere?
No. The age calculator is fully local — your birthday never leaves your browser. Handytool does not store, log or transmit any of the dates you enter.
Is the age calculator free?
Yes. Every Handytool is free to use with no sign-up, no limits and no watermarks.

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