Calculate your exact age from date of birth in years, months, days, hours, minutes, and seconds. Find out how old you are, your next birthday countdown, and the day of the week you were born. Free online age calculator.
Born on:
Next birthday in:
Age in weeks:
The age calculator measures the exact time difference between your date of birth and the current moment. It starts by computing the difference in years, then adjusts for months and days to account for varying month lengths. For the total counts (days, hours, minutes, seconds), it uses the precise millisecond difference between the two dates. This means it automatically accounts for leap years, which add an extra day every four years (except for years divisible by 100 but not 400). The next birthday countdown projects forward to the next occurrence of your birth month and day.
Legal age thresholds vary significantly by country. Here are key milestones in major countries:
| Milestone | India | USA | UK | Japan | Germany |
|---|---|---|---|---|---|
| Voting Age | 18 | 18 | 18 | 18 | 18 |
| Legal Drinking Age | 18-25* | 21 | 18 | 20 | 16/18** |
| Driving Age | 18 | 16 | 17 | 18 | 18 |
| Age of Majority | 18 | 18 | 18 | 18 | 18 |
| Marriage (without consent) | 21 | 18 | 18 | 18 | 18 |
| Retirement Age | 58-60 | 62-67 | 66-68 | 65 | 65-67 |
| Minimum Working Age | 14 | 14-16 | 16 | 15 | 15 |
* India: varies by state (18-25). ** Germany: 16 for beer/wine, 18 for spirits.
| Generation | Birth Years | Age in 2026 | Also Known As |
|---|---|---|---|
| Gen Alpha | 2013-2025 | 1-13 | Generation Alpha |
| Gen Z | 1997-2012 | 14-29 | Zoomers, iGen |
| Millennials | 1981-1996 | 30-45 | Gen Y, Echo Boomers |
| Gen X | 1965-1980 | 46-61 | Baby Bust |
| Baby Boomers | 1946-1964 | 62-80 | Boomers |
| Silent Generation | 1928-1945 | 81-98 | Lucky Few |
| Year | February 29 Day | Days in Year | Notes |
|---|---|---|---|
| 2028 | Monday | 366 | Next leap year |
| 2032 | Sunday | 366 | -- |
| 2036 | Thursday | 366 | -- |
| 2040 | Wednesday | 366 | -- |
| 2044 | Monday | 366 | -- |
Leap years affect age calculation for people born on February 29. They technically have a birthday only once every four years, though most celebrate on February 28 or March 1 in non-leap years.
The age calculator takes your date of birth and compares it to today's date. It calculates the difference in years, months, and days, then derives totals in hours, minutes, seconds, and weeks from the exact time difference in milliseconds.
Yes. The calculator uses JavaScript's Date object, which automatically accounts for leap years, varying month lengths, and daylight saving time transitions. Your age in days reflects the actual number of calendar days between your birth date and today.
Absolutely. Enter any past date into the calculator and it will compute the exact age from that date to today. This works for people, pets, events, or anything with a start date.
Because not every year has exactly 365 days. Leap years add extra days, and the calculator uses precise calendar arithmetic rather than a simple division. Dividing total days by 365.25 gives a closer approximation but still not exact.
The calculator shows the day of the week you were born on in the results section. It uses the JavaScript getDay() method which returns the correct weekday for any valid calendar date.
Subtract your birth date from today's date. Start with years: current year - birth year. If today's month/day is before birth month/day, subtract 1 from years and add 12 to months. Then subtract days. This gives exact years, months, and days.
If you were born in 2000, you are currently 25 or 26 years old depending on whether your birthday has passed this year. Enter your exact birth date above to get your precise age in years, months, and days.
The calculator shows your total days lived. A 30-year-old has lived approximately 10,950 days. The exact number accounts for leap years (about 7-8 extra days in 30 years). Enter your birth date to see your exact count.
The calculator shows a countdown to your next birthday in days. If your birthday has already passed this year, it counts down to next year's birthday. If your birthday is today, it shows 0 days — happy birthday!