Online free age calculator

free calculator Age Calculator

Age Calculator

Calculate the exact age or time interval between two dates in years, months, days, and more.

Age Results

Enter dates and click "Calculate Age" to see results.

About Age Calculation

This calculator uses the most common age system where age increases on a person's birthday. For example, someone who is 3 years and 11 months old is considered 3 years old, and will turn 4 on their next birthday.

Different cultures measure age differently. In some systems:

  • People are born at age 1 (traditional Chinese system)
  • Age increases at the New Year rather than birthdays
  • Current year may or may not be counted in the age

Month calculation methodFor month calculations, we count same dates (e.g., Jan 15 to Feb 15 = 1 month). For month-ends, we count from the last day (e.g., Jan 31 to Feb 28 = 1 month). can affect results, especially when dealing with months of different lengths.

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