Find your precise age in seconds. Enter your date of birth and an “as of” date to see exact years, months, and days—plus totals, next birthday, and days until. Compact design, works on any device.
This Age Calculator gives you an instant, accurate breakdown of your exact age in years, months, and days. Whether you’re checking your age today, on a past date, or a future date, it also shows your next birthday, how many days are left until then, and total time lived in months, weeks, days, and hours—all in a fast, mobile-friendly format.
Does it handle leap years?
A: Yes—calculations use calendar-accurate month lengths, including leap years.
Q: What about daylight saving time?
A: Results are based on whole calendar days, so DST does not affect the totals.
Q: Why don’t totals always match the Y/M/D breakdown?
A: “Totals” show cumulative units (e.g., days, hours), while the Y/M/D breakdown uses calendar rollovers.
Q: Is my data stored?
A: No. Everything runs locally in your browser.
Q: Can I change the “as of” date?
A: Yes—set any date to calculate your age on that day.