How to use this age calculator
Enter the requested values above and select Calculate. The result updates immediately on the page, so you can change one value and compare different scenarios without leaving the calculator.
Formula and method
Example
Enter a birth date and today or another date to see completed years, months and days.
What this calculator is useful for
Calculate age in years, months and days from a birth date to a selected date. It is designed for quick estimates and everyday problem solving. When a calculation affects a contract, tax filing, medical decision or other high-stakes situation, verify the result with the appropriate professional or authoritative source.
Frequently asked questions
What does the Age Calculator calculate?
Calculate age in years, months and days from a birth date to a selected date.
How does the calculation work?
Age is calculated by calendar difference, borrowing months and days when needed.
Is this calculator free?
Yes. ERICH Calculators is free to use and no account is required.