Age calculator
Calculate completed years, months, days and total days lived.
How to use
- Calculate completed years, months, days and total days lived.
- Enter your values and choose the options. Use the example below to check the result.
- Review the result; copy or download when available. Reset clears this tool.
Before you start
Calendar calculation, not a legal age determination. Feb 29 anniversaries use Feb 28 in non-leap years.
2000-01-01 → 2025-01-01 = 25 years.