Free Online Tools
Handy browser-based tools from DatesAndTimes.org. Everything runs in your browser — no account required, nothing to install.
Age Calculator
Find your exact age in years, months, and days from any birth date. See total days lived, your next birthday countdown, and what day of the week you were born.
Open tool →Days Between Two Dates
Calculate the exact number of days, weeks, months, and years between any two dates — with an option to count business days only.
Open tool →Add or Subtract Days from a Date
Add or subtract days, weeks, months, or years from any date and instantly see the resulting date and day of the week.
Open tool →Day of the Week Calculator
Find out what day of the week any date fell on or will fall on — past, present, or future — plus the week number and day of the year.
Open tool →Countdown Timer
Build a live countdown to any date and time — birthdays, holidays, deadlines, or special events — updated live in your browser.
Open tool →PDF Calendar Generator
Create print-ready PDF calendars for any month or range of months. Five styles to choose from. Formatted for US Letter (8.5″ × 11″) paper.
Open tool →