1 Hour Timer — Online Countdown
Count down from the minutes and seconds you set, and play a short tone at zero.
🔒 Processed entirely in your browser — nothing you enter here is ever uploaded.
Result
About this tool
This page opens the countdown timer already set to 60 minutes — press start and the hour begins.
A full hour suits deep work, long bakes and braises, billing blocks, exam practice under real conditions, or a proper afternoon rest.
Need 90 minutes or 7? The full timer takes any minutes and seconds, with pause, reset and an end-of-time sound — nothing leaves your browser.
Example. The form opens at 5 minutes and 0 seconds and displays 05:00. Start runs until 00:00, then the status reads Time is up. and a sine at 880 Hz plays for 0.35 seconds. A zero duration does not start.
Limit. There is no hour field, so 90 minutes display as 90:00. Seconds are clamped to 0–59. A hidden tab jumps to the deadline instead of ticking in the background. The tone does not repeat.