Calculate exact age in years, months, days, hours — plus countdown to next birthday.
Age = current date − date of birth, broken into years, months, days. Handles leap years correctly. Uses your device's local timezone by default — change it in settings if needed for international use.
Leap years. Months have 28-31 days. This tool gives exact days (not approximate). If you want 'years × 365', multiply years × 365 manually — but exact days is more accurate.
Yes, this tool is accurate to the day. But for legal purposes (passport, marriage, voting), always cross-reference with official documents and specific jurisdiction rules.
Yes — the 'from' field can be any past date, not just DOB. Use it for anniversaries, project durations, anything.