Time tools
Timers, clocks, date math, and timezone planning. Pick a tool and start working.
Countdown TimerSet a timer for any duration. Get an alert when time is up.OpenStopwatchPrecise stopwatch with lap tracking and millisecond accuracy.OpenTimezone ConverterConvert times between any IANA timezones with DST awareness.OpenPomodoro TimerWork in focused intervals with automatic break scheduling.OpenWorld ClockTrack the current time in multiple cities at a glance.OpenUnix Timestamp ConverterConvert Unix epoch timestamps to dates and back, in seconds or milliseconds.OpenAge CalculatorCalculate exact age in years, months, days, hours, and seconds.OpenDate CalculatorAdd or subtract from a date, or measure the duration between two dates.OpenInterval Timer (HIIT)Run work/rest intervals for HIIT, Tabata, and circuit workouts.OpenAlarm ClockSet multiple alarms with labels, audio, and desktop notifications.OpenMeeting PlannerFind the best meeting time across timezones on a 24-hour overlap grid.OpenSunrise & SunsetCalculate sunrise, sunset, twilight, and golden hour for any location.OpenChess ClockTwo-player chess clock with Fischer increment and Bronstein delay.Open