How Many Days Have I Been Alive?
Enter your date of birth above and the calculator counts every day from the day you were born to today, including every leap day along the way. It also converts your age into weeks, months, hours, minutes and seconds. The seconds keep ticking while the page is open. Add your birth time if you know it for a more precise hour, minute and second count.
How to Calculate Your Age in Days
A rough estimate is your age in years multiplied by 365, plus one extra day for every leap year you have lived through. Someone who is exactly 30 years old has lived 30 × 365 = 10,950 days, plus 7 or 8 leap days, so about 10,957 to 10,958 days. The calculator does the exact count for you, so you do not have to work out which February 29ths you have seen.
Fun Age Milestones to Celebrate
| Milestone | Roughly when |
|---|---|
| 1,000 days old | About 2 years, 9 months |
| 1 million minutes old | About 1 year, 11 months |
| 100,000 hours old | About 11 years, 5 months |
| 10,000 days old | About 27 years, 4 months |
| 1 billion seconds old | About 31 years, 8 months |
| 20,000 days old | About 54 years, 9 months |
| 25,000 days old | About 68 years, 5 months |
The 10,000 day birthday has become a popular alternative celebration, and the billion-second birthday is a favorite with math fans. The calculator lists the exact dates of your next milestones, so you can put them in your calendar.
How Many Seconds Old Am I?
One day has 86,400 seconds, so a 25-year-old has been alive for roughly 789 million seconds. Since the seconds counter above updates live, you can watch it grow in real time. Want a visual version of your life so far? Try the life in weeks chart, or get your exact age in years, months and days with the age calculator.
