Countdown — 4 Hours
Set timer for 4 Hours. Wake me up in 4 Hours. Set the alarm for 4 Hours from now. Use it as a 4 hr timer, 4h timer, or 4 hour countdown. It is a free 4 Hours countdown timer with alarm that runs entirely in your browser.
This page is pre-filled for a 4 Hours countdown. Click Start when you are ready — the display shows remaining time in large digits, with optional fullscreen for visibility across the room.
Hour timers help you track longer blocks — study sessions, slow cooking, shifts, or all-day project milestones. Set it and check back when the hour block is complete.
When the timer reaches zero, your chosen sound plays and an on-screen alert appears. Edit the timer to change duration, sound, title, or what happens at zero (stop, restart, or count up).
Frequently asked questions
- How do I start a 4 Hours timer?
- The duration is already set to 4 Hours. Click Start on this page. Use Pause and Reset anytime; press Space to start or pause when the timer is active.
- Does this 4 Hours timer have an alarm?
- Yes. When the countdown reaches zero, an alarm sound plays and an on-screen alert appears. Edit the timer to change the ringtone, turn on repeat until dismissed, or switch to fullscreen for a room-visible countdown.
- Does the timer keep running in the background?
- The timer runs in this browser tab. Keep the tab open and avoid putting your device to sleep for accurate countdown.
- Can I share this timer with someone else?
- Yes. Use the Share section at the bottom to copy a link with the duration encoded, or grab embed code for your website.