Enter your date of birth to see your exact age in years, months and days, total days lived, and a countdown to your next birthday.
This tool counts the exact number of full years, months and days between your date of birth and today, correctly handling leap years and varying month lengths — not a rough estimate.
Why does my age in months look different from my age in years × 12?
Because your age in months accounts for the exact day of the month, not just full years. If your birthday hasn't happened yet this month, the month count reflects that precisely.
Does this account for leap years?
Yes — the calculation uses actual calendar dates, so leap years are automatically handled correctly.