Countdown timer
Count down to a date and time in this tab.
Countdown timerの使い方
The Countdown timer counts down either a duration of 1 to 180 minutes or to a specific future date and time in your local time zone. You can start, pause and reset it, and optionally play a short tone when it finishes. A date-based countdown keeps its deadline while paused; a duration countdown pauses its remaining time. Reloading the page resets it.
- Choose Duration or Date and time, then set the minutes or a future deadline in your local zone.
- Optionally enable a completion sound and select Start. Use Pause or Reset when needed.
- A duration pauses elapsed time; a date countdown keeps its deadline. Keep this tab open to receive the completion notice.
このツールの機能
Choose a duration or a future date and time in your local zone. Start, pause or reset the timer and optionally enable a completion sound. A date countdown retains its deadline when paused.
制限と処理方法
Timers remain in this tab and reset on reload. Background throttling can delay completion alerts. Durations are bounded by the visible controls; stopwatch lap history is capped at 1,000 entries.
よくある質問
How do I count down to a specific date and time?
Set Countdown type to Date and time, then pick the target in your local time zone. The timer shows the remaining hours, minutes and seconds. It will not start if the target is already in the past.
Does the countdown keep running if I pause it?
It depends on the type. A date and time countdown keeps tracking its deadline, so pausing only stops the display from updating. A duration countdown freezes the remaining time until you press Start again.
Can the countdown timer play a sound when it ends?
Yes. Tick Play a sound when complete before starting, and a short tone plays when time is up, along with a completion message. Browsers may delay alerts in background tabs, so keep the tab active for timing-sensitive use.
Where is my input processed?
This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.
What are the input limits?
Timers remain in this tab and reset on reload. Background throttling can delay completion alerts. Durations are bounded by the visible controls; stopwatch lap history is capped at 1,000 entries.