Age Calculator
Calculate your precise age in years, months and days — plus total weeks, hours, your zodiac signs and a live countdown to your next birthday.
Examples
See what this tool can do.
How old am I exactly?
Enter your birth date and instantly see your age in years, months and days — plus the exact number of hours and minutes you've been alive.
Countdown to my birthday
See exactly how many days remain until your next birthday and which weekday it lands on this year.
Find your zodiac signs
Discover both your Western star sign and your Chinese zodiac animal, calculated automatically from your date of birth.
Age gap & milestones
Check the total weeks or days between now and any birth date — handy for planning milestones and anniversaries.
Tips & tricks
Get the most out of it.
- 1Your results update live — the seconds counter ticks in real time.
- 2Use “Copy results” to paste your full age breakdown anywhere.
- 3Everything is calculated in your browser; no birth date is ever sent to a server.
- 4Landing on your birthday? Enjoy the confetti — the tool detects it automatically.
- 5Leap-year births are handled correctly, including February 29th.
- 6Hit Print to save a clean PDF snapshot of your results.
About Age Calculator
The Age Calculatoris the fastest way to find out exactly how old you are. Instead of a single number, it gives you a complete picture: your age in years, months and days, along with the total months, weeks, days, hours and minutes you've been alive.
More than just a number
Beyond the raw numbers, the calculator surfaces the fun details — the day of the week you were born, whether your birth year was a leap year, your Western zodiac sign and your Chinese zodiac animal. A live countdown shows exactly how many days remain until your next birthday and which weekday it will fall on.
Private and instant
Because everything runs client-side in your browser, results appear the instant you pick a date — with no loading, no sign-up and no data ever leaving your device. It works beautifully on mobile, tablet and desktop.
Common uses
- Answering “how old am I?” down to the second
- Planning birthday parties with an accurate countdown
- Calculating age for forms, eligibility and milestones
- Discovering zodiac and Chinese zodiac signs
Frequently asked questions
We compare your date of birth to the current date, accounting for the varying number of days in each month and for leap years. The result is broken down into full years, remaining months and remaining days.