Age Calculator
Calculate your exact age in years, months and days, plus total days lived, from your date of birth. Free and instant.
About this tool
This age calculator tells you exactly how old you are in years, months and days, and how many total days you have been alive. Enter your date of birth and, optionally, a reference date to compute your age on any past or future date.
Knowing the precise breakdown matters for school enrollment, visa applications, contracts, insurance and retirement eligibility. The tool also reports total months and days — a quick way to see age in different units.
FAQ
How do I calculate exact age?
Subtract your birth date from today: count full years, then remaining months, then remaining days within the current month.
Why is my total days different from age x 365?
Leap years add extra days. The exact day count includes every February 29 that passed since your birth.
Can I calculate age between two dates?
Yes. Set the "as of date" to any date — useful for contracts, visas and retirement planning.