Find your exact age, to the day.
Enter a date of birth and see your age in years, months and days, a live countdown to your next birthday, and how long you have been around.
Runs in your browserNothing uploaded or storedFree, no sign-up
Format: DD-MM-YYYY (for example 17-05-1994). Dashes are added as you type, and you can paste 17/05/1994 too.
Results appear as soon as the date is complete.
Enter a date of birth to see your exact age, your next birthday and some fun numbers.
Your age
0years
0months
0days
Next birthday
Time you have lived
Months0
Weeks0
Days0
Hours0
Minutes0
Seconds0
About your birth date
Born on a–
Zodiac sign–
Chinese zodiac–
Generation–
Heartbeats so far–at about 80 a minute
Spent asleep–at 8 hours a night
Trips round the Sun–
Full moons seen–approximate
Next 1,000-day milestone–
Pick two dates to see the time between them.
Time between the dates
0years
0months
0days
Total days0
Total weeks0
Total months0
Weekdays (Mon–Fri)0
Weekend days0
Total hours0
How your age is worked out
Age is counted in whole calendar years and months first, then the leftover days. If you were born on 31 January, one month later falls on the last day of February, so a birthday on the 29th, 30th or 31st never skips a month.
Everything uses your device's calendar day, so a time zone change cannot move your date. People born on 29 February celebrate on 28 February in non-leap years in this calculator.
Questions people ask
How is my exact age calculated?
The calculator counts complete calendar years, then complete months, then the remaining days between your date of birth and the chosen date. It also gives total days, weeks, hours, minutes and seconds.
Can I find my age on a past or future date?
Yes. Change the “Age on” date to any day after your birth, such as a job application deadline or a future anniversary, and every figure updates.
Does the countdown to my next birthday update live?
When “Age on” is set to today, the countdown ticks every second, and so does the seconds-lived counter. For any other date it shows the days remaining from that date.
How is the Chinese zodiac decided?
Your browser's Chinese calendar decides it, so births in January or February are placed in the correct lunar year. If a browser does not support that calendar, the tool falls back to an approximate date and says so.
What happens if I was born on 29 February?
Your birthday is shown on 28 February in non-leap years and 29 February in leap years.
Are the heartbeats and full moons exact?
They are estimates for fun. Heartbeats assume about 80 beats a minute, and the moon cycle is taken as 29.53 days.
Is my date of birth stored or sent anywhere?
No. All calculations run in your browser and nothing is saved.