Age Calculator — Years, Months, Days and Hours
Calculate your exact age in years, months, days and hours free. Find days until your next birthday, your age on any date, zodiac sign and more — instant, no sign-up.
Last updated: June 2026
Your age
- Exact age
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- In months
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- In days
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- In hours
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- Next birthday
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- Born on a
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- Zodiac sign
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Enter your date of birth to see your exact age and more.
About this tool
How to calculate your exact age
Working out your age sounds simple until you try to be precise. Because months have different lengths and leap years add a day every four years, subtracting one year from another rarely gives the exact figure. This age calculator does it properly: enter your date of birth and it counts the complete years between then and today, then the leftover months, then the remaining days — the same way you'd say "32 years, 4 months and 11 days old".
It doesn't stop there. The same span is shown as a total number of months, a total number of days, and a total number of hours, which is a fun way to see just how much time has passed. The tool also tells you which day of the week you were born on, your Western zodiac sign, and how many days remain until your next birthday — counting forward to this year's date if it's still ahead, or next year's if it has already passed.
You're not limited to "today" either. Uncheck the as of today option and pick any date to find how old you — or anyone — will be on a future occasion, or how old you were at a past event. Because the whole calculation happens in your browser, your date of birth never leaves your device, and you can use the share button to copy a link that reopens the same result.
An age calculator is useful far beyond curiosity: it's handy for filling in forms that ask for an exact age, checking eligibility for age-restricted services, planning milestone birthdays, or simply settling a debate about who's older. Try it above, then explore the related tools to count the days between any two dates or set a live countdown to your next big moment.
How it works
Three quick steps — no account, nothing uploaded to a server.
Enter your date of birth
Pick your birth date with the date picker.
Choose the target date
Use today, or untick the box to pick any other date.
See your exact age
Years, months, days, hours, zodiac and next birthday update instantly.
FAQ
Frequently asked questions
How does the age calculator work?
Enter your date of birth and the calculator works out the exact time between then and today (or any date you choose). It counts complete calendar years first, then the remaining months, then the remaining days — accounting for leap years and the different lengths of each month — so the result is precise to the day rather than a rough average.
How do I calculate age between two specific dates?
Uncheck the 'As of today' box and a second date field appears. Set it to any date — past or future — and the calculator shows the exact age or gap between your date of birth and that date. This is handy for working out how old someone will be on a wedding day, an exam date, or any other milestone.
What is a zodiac sign and how is it determined?
Your zodiac (or 'sun') sign is based on the position of the sun on the day you were born, which maps to a date range each year — for example, anyone born between 21 March and 19 April is an Aries. The calculator reads your birth month and day and returns the matching Western astrology sign automatically.
How is my next birthday countdown calculated?
The tool takes the month and day of your birth and finds the next time that date occurs from today. If your birthday has already passed this year, it counts to next year's; if it's still ahead, it counts to this year's. The result is the number of days remaining until you celebrate again.
Is my date of birth kept private?
Yes. The entire calculation runs in your browser with JavaScript — your date of birth is never sent to a server, stored, or shared. You can optionally copy a share link, which encodes the date in the URL only so you can reopen the same result, but nothing is saved on our side.
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