Age Calculator
Your exact age to the day, plus a live second-by-second ticker.
34yr10mo12d
1,100,260,800
50 days
Thursday, September 3, 2026
Virgo
This free age calculator tells you exactly how old you are — down to the second. Enter your date of birth and instantly see your age in years, months and days, plus running totals in months, weeks, days and a live count of every second you have been alive. It also shows the number of days until your next birthday and your zodiac sign. Everything is worked out in your browser, with no sign-up and no data ever leaving your device.
How to use the age calculator
- Pick your date of birth using the date field on the left.
- Read your exact age at the top of the result panel, shown as years, months and days.
- Check the chips below for your age expressed in total months, weeks and days.
- Watch the “seconds lived” card tick upward in real time, and see how many days remain until your next birthday.
Frequently asked questions
How is my exact age calculated?
We compare your date of birth with the current date and break the gap into full years, then remaining months, then remaining days — the same way you would count an anniversary. Live totals such as seconds lived are derived from the exact time elapsed since midnight on your birth date.
Why does the seconds counter keep moving?
Age is a live value. A single one-second timer refreshes the page, so the seconds-lived figure increases every second you keep the tab open.
Can I compare two people's ages?
Yes. Turn on “Compare with another person” to reveal a second date field. The tool then shows who is older and by exactly how many years, months and days.
How is the next birthday counted?
We find the next occurrence of your birth day and month from today and count the whole days in between. If your birthday is today, it shows zero days.
Is my date of birth stored anywhere?
No. The calculation runs entirely in your browser. Nothing is uploaded, saved on a server, or shared.