Date & time calculators
Age, date math, and time arithmetic — clear answers fast.
Age Calculator
Calculate your exact age in years, months, and days from your date of birth.
Date Calculator
Add or subtract days from a given date or find the difference between two dates.
Time Calculator
Easily add, subtract, or convert hours, minutes, and seconds.
Simplify date and time arithmetic: age from date of birth, differences between dates, and time add/subtract—handy for planning, HR, school, and everyday scheduling.
Pick the tool you need below; inputs are designed to be quick on mobile and desktop alike.