Count down to any date and time, with start, pause and reset.
Uses your device's local time zone.
End of the year
A long countdown
2026-12-31T23:59Tomorrow morning
A short deadline
09:00A launch date
Weeks away
2026-09-01T12:00Choose a date and a time. The countdown starts immediately and updates every second.
Pausing freezes the display; resuming recalculates against the real target, so the countdown stays accurate rather than drifting.
The target is saved in your browser, so refreshing or reopening the page picks up where it was.
The target date is kept in local storage on your device, so an accidental reload does not lose a countdown you set days ago.
Each tick is computed from the actual target time rather than by decrementing a counter, so it stays correct even if the tab is backgrounded.
Reaching zero shows a completion state instead of quietly counting up into negative time.
Set a target date and time and watch the days, hours, minutes and seconds tick down. Useful for launches, deadlines, exams and events. The countdown can be paused and resumed, and the target is remembered in your browser so a refresh does not lose it — stored locally on your own device, never sent anywhere. When the target passes, the timer says so clearly rather than silently counting upward.
Keep going
Related pages in Date & Time, plus what others are using right now.
More date & time that pair well with this one.
Add or subtract days from a date, or find the difference between two dates.
Work out an exact age in years, months and days, plus the next birthday.
Compare times across cities and convert a meeting time between zones.
Convert Unix timestamps to dates and back, in seconds or milliseconds.
Create strong random passwords with full control over length and characters.
Format, validate and minify JSON, with errors that point to the exact line.
Work out any percentage — of a number, as a share, or as a change.
Count words, characters, sentences and paragraphs as you type.
Convert between length, weight, temperature, volume, speed, data and more.
Count characters with and without spaces, against the limits that matter.
Find the mean, median, mode and range of a list of numbers, with the working shown.
See how savings grow with compounding, including regular contributions.
Sample and population standard deviation and variance, both shown, with the working.
Turn a logo into favicon.ico, the PNG sizes a site needs, and the HTML to declare them.
Check a downloaded file against its published checksum, without uploading anything.
Stamp text like DRAFT or CONFIDENTIAL across a PDF, in your browser.
Turn JSON into readable YAML, with quoting and multiline strings handled properly.
Escape text for HTML, or turn entities back into readable characters.