3 Hour Timer

3 hours = 180 minutes = 10,800 seconds

03 : 00 : 00

 

About this 3 hour timer

A three-hour countdown for practice exams, long study blocks, slow roasts and half-day deep work. Hit start and the timer shows the exact clock time it will finish, so you never have to do the math.

What people use a 3 hour timer for

  • Timed practice exams (many university finals and bar-exam sessions run 3 hours)
  • Slow-roasting pork shoulder or ribs
  • Half-day deep work or study blocks
  • Board game nights, tournaments and long films

3 hours at a glance

In minutes180 minutes
In seconds10,800 seconds
Halfway point1 hour 30 minutes
Share of a day12.5%
Start now and it ends at—

How to use the 3 hour timer

  1. The timer is ready at 3:00:00. Tap Edit time to change it.
  2. Press Start Timer (or the space bar). The finish time appears under the digits.
  3. Press Full screen to fill the screen — handy for classrooms, meetings and kitchens.
  4. When it reaches zero an alarm plays until you press Stop Alarm.

Keyboard shortcuts

  • Space start / pause
  • R reset
  • F full screen
  • M mute

Frequently asked questions

How do I set a timer for 3 hours?

Click Start Timer — it is already set to 3:00:00. To change it (for example 3 hours 45 minutes), tap Edit time, type the hours, minutes and seconds, and press Set.

How many minutes and seconds are in 3 hours?

3 hours is 180 minutes, or 10,800 seconds.

What time will it be in 3 hours?

The line under the timer shows the exact finish time based on your device clock, and it updates when you pause or add time.

Can I use this as a 3-hour exam timer?

Yes. Press Full screen and project it. The ring turns yellow in the last 5 minutes and red in the final minute, and an alarm sounds at zero. If you want elapsed time as well, use the Exam Timer.

Will the timer keep running if I refresh or close the tab?

Yes. The end time is saved in your browser, so reopening this page shows the correct time left. To hear the alarm, keep the tab open and your device's sound on.

Does the timer work on a phone?

Yes. It runs in any modern mobile browser with no app or sign-up, and it asks your phone to keep the screen awake while it runs.

Related timers

Exam Timer Study Timer 90 Minute Timer 2 Hour Timer 4 Hour Timer 5 Hour Timer

Other timer lengths

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