8 Hour Timer

Eight hours is the standard working day and the classic sleep target — the longest countdown most people actually set.

8:00:008 Hour Timer

Keep this tab open — the countdown stays accurate in the background, and the alarm sounds when it reaches zero.

What a 8 hour timer is good for

Hour-scale countdowns suit slow cooking, long study or work blocks, charging and soaking times, parking limits, and anything else you set once and forget about. Leave this tab open in the background and the alarm will bring you back when it's finished.

Planning a longer session? Work out the totals with the time duration calculator.

Open Calculator

How long is 8 hours?

Unit8 hours equals
In seconds28,800 seconds
In minutes480 minutes
In hours8 hours
On the clock8:00:00

Frequently Asked Questions