6 Hour Timer (6h)
Free online 6 hour (6h) countdown timer with alarm
Space start/pause · R reset · +− adjust
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Keep this countdown beside other tasks in Multiple Timers →Related Timers
Embed this timer
Paste this into any page — a class blog, a lesson plan, a meeting agenda — and visitors get a working 6 hour timer with no script tag, no account and no tracking. Please keep the credit link.
About the 6 Hour Timer
Set a 6 hour timer for a half-day block, long cook or study session. It survives sleep and tab throttling, tells you the exact clock time it ends, and can play rain or brown noise the whole way through.
TimerHub calculates remaining time from an absolute finish timestamp, so missed browser callbacks do not create drift. Read the timing accuracy methodology and reproducible tests.
Common Uses
- Half-day work block
- Slow cooker reminder
- Long study session
- Marinating or brining
- Road trip break reminder
How to Use the 6 Hour Timer
- Click Start (or press Space) to begin your 6 hour countdown
- Press Space again to pause and resume, or R to reset the timer
- Use the +/- buttons to adjust by 5 minutes while running
- Toggle Repeat to loop the countdown automatically, and watch the finish time under the display
- Use the Fullscreen control below the timer for a large full-screen countdown (Esc to exit)
- Pick a background sound — rain, ocean, fireplace or brown noise — that fades out at zero
- Choose or mute the alarm sound from the sound settings in the header
- Add
?autostart=1to the link to start the countdown on load - Enable notifications for alerts when your 6 hour timer finishes, even in a background tab
Frequently Asked Questions
How long is 6 hours in minutes?▾
6 hours is exactly 360 minutes or 21,600 seconds. Our free 6-hour countdown timer tracks every second and sounds an alarm when done.
What is a 6 hour timer used for?▾
A 6 hour timer is commonly used for half-day work block, slow cooker reminder, long study session. Set the countdown and focus on your task with confidence.
Does the timer work in the background?▾
Yes, our timer continues running even if you switch to another tab or minimize your browser. Enable push notifications to get alerted when your countdown finishes.
Will the alarm sound after 6 hours?▾
Yes, an alarm sound plays automatically when the 6-hour countdown reaches zero. You can also enable push notifications for an extra alert, even if you’re in another tab.
Can I make the timer fullscreen?▾
Yes, use the Fullscreen control below the timer for a distraction-free full-screen countdown — useful for long study sessions, offices, and shared screens. Press Esc to exit fullscreen.