Calculators tool
Set a Countdown Timer
Count down to a chosen date and time with a large readable display.
Inputs
Results
Countdown
00:00:00
Ready
Simple steps
How it works
- 01
Choose the target date and time.
- 02
Start the countdown.
- 03
Pause or reset the timer as needed.
Good to know
Frequently asked questions
Does it keep counting in a background tab?
Yes. The display recalculates from the target timestamp when the tab becomes visible again.
Which timezone is used?
The date/time input uses your browser’s local timezone.
Can I pause the countdown?
Yes. Pause stores the remaining duration, and Resume continues from it.
Will it play a sound at zero?
The countdown displays completion; browsers may restrict sounds until user interaction.
Is the target sent anywhere?
No. The countdown runs locally in your browser.