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Calculate your exact age in years, months, days, hours, minutes and seconds
This free Chronological Age Calculator lets you instantly determine your exact age from your birthdate to the current date — down to the day, hour, minute, and second.
Chronological age is the exact time that has passed since a person's birth, typically expressed in years, months, and days. It’s the standard age format used in schools, healthcare, legal documents, and more.
Simply enter your birth date, and optionally a reference date. The tool calculates your full age, including:
Whether you're checking your child’s exact age for kindergarten, calculating eligibility for exams, or just curious — this chronological age calculator is the simplest and most accurate way to do it.