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Age Calculator
Date & timeOffline-ready
Age Calculator computes the exact age from a date of birth to today or any target date, broken down into years, months, days, and optionally hours. Useful for birthday countdowns, form validation, retirement planning, and passport or visa age checks. Uses a calendar-accurate algorithm accounting for leap years and varying month lengths. Runs entirely in your browser.
Related: DaysDateDue Date (pregnancy)
Your files and inputs stay in your browser — nothing is uploaded or stored.