Date & Time Tools
Timers, countdowns, date math and more.
8 free tools · updated regularly
Pomodoro Timer
Work in focused 25-minute sessions with short and long breaks, with a visual countdown and session counter.
Open tool →Time Zone Converter
Pick a time and instantly see it across major world time zones — DST handled automatically.
Open tool →Week Number Calculator
Find the ISO 8601 week number for any date, plus the day of the year and weekday.
Open tool →Add or Subtract Days Calculator
Add or subtract days, weeks, months or years from any date to find the resulting date.
Open tool →Date Difference Calculator
Find the time between two dates in years, months and days, plus total days, weeks and months.
Open tool →Days Until Date Calculator
Find out how many days until any date — plus weeks, months and hours. Works for past dates too.
Open tool →Online Stopwatch
Start, pause, lap and reset a precise stopwatch with millisecond display — right in your browser.
Open tool →Countdown Timer
Count down to any date and time with a live display of days, hours, minutes and seconds.
Open tool →About Date & Time Tools
Handy date and time utilities — countdown timers, a stopwatch, date difference and days-until calculators, date arithmetic and week numbers. All run in your browser.