Age Calculator: Your Life in Detail

Calculate your exact age in years, months, days, and even minutes.

How long have you really been on this planet? While most of us just think in years, our Age Calculator provides a deep dive into your personal timeline. Whether you’re filling out a passport application, tracking a newborn’s age in weeks, or simply curious about how many days are left until your next big milestone, this tool delivers the answer with down-to-the-second precision.

How Age is Calculated Globally

Age calculation seems simple, but different cultures and systems treat it differently. On familyhealthcalc.com, we use the standard Western Age System:

1. The Western System (Standard)

In the US, UK, and Canada, a person’s age starts at zero and increases on their birthday.

• The Leap Year Factor: Our calculator accounts for February 29th. If you were born on a leap day, your “legal” birthday in non-leap years is typically February 28th or March 1st, depending on your local jurisdiction.

2. Chronological Age vs. Developmental Age

For parents and pediatricians, “age” is often measured in weeks for the first few months of life and months until age two. This is because developmental milestones happen rapidly during these windows.

Practical Uses for Families

• School Enrollment: Check if your child meets the age cutoff for Kindergarten or Primary School by calculating their age as of the school’s “start date.”
• Milestone Planning: See exactly how many days are left until you reach retirement age, become eligible for a driver’s license, or turn 21.
• Insurance & Legal: Calculate your exact age for life insurance quotes or pension eligibility, where a difference of a few days can sometimes affect your bracket.
• Astrology & Fun: Find out exactly what day of the week you were born (e.g., “Monday’s Child”).