⏳ 8 Hour Timer

A full eight hours, counted down with an alarm at zero.

08:00:00

Tip: click anywhere on the page at least once so the alarm sound can play when time is up.

What is a 8 hour timer good for?

Eight hours is a full work shift, a recommended night's sleep, or the time an overnight bread dough needs to rise. This preset tracks the whole stretch so you can walk away.

Frequently Asked Questions

Can I use this as a bedtime sleep timer?

Yes — start it when you go to bed and it will alarm 8 hours later, roughly the recommended sleep length for most adults.

Will it survive my browser auto-updating or restarting?

No — a browser restart clears the running timer. Avoid closing the tab, or set a backup alarm on your phone for anything this long.

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