Time until the specified time will count down.

Enter time

Select the date and time and click the "Set" button to start the countdown.

Click the "Current Time" button to select the current time.

Click the "Reset" button to remove the countdown.

Setting

You can change whether to display the countdown time up to milliseconds by changing "Display milliseconds".

If you change the "When finished" setting to "Show message", you can display a message when the countdown is over.