12 Hours Timer

Free online 12 hours countdown timer

Time Remaining
12:00:00
Ready to start

12 Hours Equals

Minutes 720
Seconds 43,200
Milliseconds 43,200,000

Other Hour Timers

1 Hr
2 Hr
3 Hr
4 Hr
5 Hr
6 Hr
8 Hr
10 Hr
24 Hr

Minute Timers

5 Min
10 Min
15 Min
20 Min
30 Min
45 Min
60 Min

Related Calculators

12 Hours From Now Hours Calculator

12 Hours Timer

Use this free 12 hours countdown timer for long tasks, study sessions, or any activity that needs timing.

How to Use

  1. Click the Start button to begin the countdown
  2. Click Pause to temporarily stop the timer
  3. Click Reset to start over
  4. An alert will sound when the timer finishes