Countdown Timer
9 toolsCount down live to a target date and time.
Runs in your browser — your files and text stay on your device
A complete date and time toolkit — convert Unix timestamps, calculate exact age or the difference between two dates, check the world clock across timezones, run a countdown or stopwatch, add business days, or look up a week number. Everything runs locally in your browser.
Timestamp ConverterAge CalculatorDate DifferenceTimezone ConverterWorld ClockCountdown TimerStopwatchBusiness Days CalculatorWeek Number Lookup
Pick a target date & time
How to use this tool
- 1Enter an optional label and pick a target date and time.
- 2The countdown ticks live in days, hours, minutes, and seconds.
- 3It shows a completion message once the target passes.
Frequently asked questions
Does the countdown keep running if I close the tab?
No — it recalculates live only while the page is open; there's no notification when it completes.
What timezone is the target in?
Your browser's local timezone, the same as the datetime input.