Free age calculator — exact age in years, months, days and hours, plus a birthday countdown and life facts. Private and instant.
Enter a date of birth to begin.
It uses real calendar arithmetic including leap years, so the years, months and days are exact — plus total days, hours, minutes and seconds lived.
Yes. Set any “as of” date to see the exact age at that point — useful for retirement, contracts or historical dates.
Yes. Month-end borrowing uses the correct number of days per month and leap days are counted in the total-days figure.
No. Everything is calculated in your browser. Nothing is uploaded or saved to a server.
Some tools parse dates in UTC, causing off-by-one errors across time zones. This calculator parses your dates locally to avoid that.