Enter your day, month, and year of birth. The calculator instantly computes your age with full leap-year accuracy — down to years, months, days, hours, and even seconds. Toggle to "Specific Date" mode to calculate how old you were (or will be) on any date in the past or future.
The Birthday Countdown shows exactly how many days remain until your next birthday, along with the precise calendar date. If today is your birthday, it will celebrate that instead. The countdown automatically adjusts for leap-year birthdays (February 29).
The Life in Weeks grid visualises your entire life as individual squares — one square per week. Green squares represent weeks already lived, the navy square is your current week, and grey squares are weeks ahead. The default reference ceiling is 85 years, which you can personalise in the "Life in Context" section below. Most people have never seen their life represented this way.