Date and time tools
Count days, convert timestamps, track time and plan an agenda.
Browse tools
Date and time tools: choose your task
Days between dates
Count days between two dates, optionally including the end date. Counts calendar days independently of time zones. Reversed dates produce negative results. An inclusive same-day range is one day.
Unix timestamp converter
Convert seconds or milliseconds since the Unix epoch to dates and back. Choose seconds or milliseconds explicitly. Date input supports UTC or Japan time. Leap seconds are not represented.
Countdown timer
Count down from a duration with pause and resume controls. Remaining time follows elapsed wall time. Closing the tab stops the timer. Completion is visual, without audio or system notifications.
Stopwatch
Measure elapsed time and record or copy laps. Records up to 100 laps. Closing the tab clears them. Elapsed time is calculated independently of display refresh frequency.
Time budget planner
Allocate presentation or meeting time across weighted agenda items. Enter one name and weight per line, separated by a comma. Rounded minutes sum to the total. Some items may receive zero minutes; use the result as a draft agenda.
Weekday counter
Count weekdays and weekend days in a date range. Excludes Saturdays and Sundays only. Public holidays and company closures are not included. Choose whether to include the end date.