Precise age calculation — years, months, days, hours, minutes & seconds. Countdown to next birthday (months + days).
Tip: If you don't know the exact time, leave it blank — the calculator will assume midnight.
This Age Calculator gives you a precise, calendar-aware breakdown of your age — not only in years, months and days, but down to hours, minutes and seconds.
It runs entirely in your browser and performs robust date/time arithmetic so results stay accurate even across leap years and month-length differences.
Enter your birth date and, if available, the exact time of birth to get an accurate reading. The tool also calculates the time remaining until your next birthday and expresses that countdown as months and remaining days, which is often more intuitive than a pure day count.
This calculator is useful for many situations — filling official forms that require your exact age, planning milestone celebrations, creating time capsules, or simply satisfying curiosity about how long you have lived in different units.
Because the computation occurs locally in your browser, no information is transmitted or stored externally, preserving your privacy.
SEO note: This calculator provides exact age, total months, total days, total hours, minutes and seconds, plus a human-friendly months+days countdown to the next birthday — making it ideal for queries like "age calculator with time" and "time until my birthday".