Region DTM · 10 tools
Date & time tools
D-day counters, calendars, timers, and time tools
Date Calculator
Count down to a date, find the days between two dates, or the date N days later.
Countdown Calculator
Count the days left until a target date. Yearly anniversaries roll over to their next date.
Unix Timestamp Converter
Convert between Unix timestamps (seconds/milliseconds) and human-readable dates.
Timer & Stopwatch
Get a sound alert when your set time is up. Switch to stopwatch mode to record lap times.
World Clock
See the current time in several cities at a glance and slide the time to plan meetings.
Time Calculator
Calculate the time between two clock times, add or subtract time, and total up durations.
Anniversary & 100-Day Calculator
Find the dates of 100 days, 1,000 days, yearly anniversaries and more from a start date.
Week Number Calculator
Find which week of the year (ISO) and which week of the month a date falls in.
Tools from other regions tagged #Date & time
They live in another category, but they're handy for date & time tasks too.