Your age will appear here.
Enter your date of birth using the date picker. The calculator shows your exact age in years, months, and days. Compare two dates to find the age difference.
Whether for forms, birthdays, or eligibility requirements, get instant accurate results without manual math.
Accurate to the exact day, accounting for leap years and varying month lengths. The underlying date math is the same as the difference between two Date objects, so results match what you'd get from a calendar or spreadsheet — no rounding shortcuts.
Yes — enter any two dates (a birth date and a target date, or two arbitrary dates) and the calculator returns the exact years, months, and days between them. Useful for visa eligibility windows, school cutoffs, contract terms, and similar "must be at least X years old by Y" requirements.
Yes, leap years are handled correctly including Feb 29 birthdays. If you were born on Feb 29, the calculator uses Mar 1 in non-leap years so the "age in days" stays consistent. Century rules (e.g. 1900 is not a leap year, 2000 is) are also respected.
No — all calculations run locally in your browser. No birth dates, no event dates, and no results are sent to a server, logged, or stored beyond the current page session. Refreshing or closing the tab clears everything.
The Toolzie Age Calculator tells you exactly how old you are in years, months, weeks, days, hours, and minutes. Just enter your date of birth and get a precise breakdown of your age instantly — no sign-up required.
It calculates your exact age down to the day, factoring in leap years and varying month lengths.
Yes — just set both the birth date and target date fields to any dates you choose.
Yes, you can enter a future target date to see how old you will be on that date.
Completely free, with no account or download required.
Estimates only. Not tax, financial, or legal advice. Full disclaimer · Terms
Age and life milestone calculations are useful for birthdays, retirement planning, and life expectancy. Top books cover life stages, financial planning, and milestone celebrations.