Everyday math
Age Calculator
Find exact age in years, months and days from a date of birth — handy for forms, eligibility checks and birthday countdowns.
Date of birth
Age
Exact age
Enter a date of birth
Total days lived—
Total months lived—
Days to next birthday—
Day of the week born—
How age is calculated
Age here is calculated as full elapsed calendar time between the date of birth and the reference date — counting complete years first, then the remaining complete months, then the remaining days, which is the same convention used on most government and school admission forms.