123 Seconds Timer
Press Space to start/pause, R to reset, F for fullscreen, ? for help.
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Set Timer for Specified Time
124 Seconds Timer
125 Seconds Timer
126 Seconds Timer
127 Seconds Timer
128 Seconds Timer
129 Seconds Timer
130 Seconds Timer
131 Seconds Timer
132 Seconds Timer
133 Seconds Timer
134 Seconds Timer
135 Seconds Timer
136 Seconds Timer
137 Seconds Timer
138 Seconds Timer
1 Second Timer
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3 Seconds Timer
5 Seconds Timer
10 Seconds Timer
15 Seconds Timer
20 Seconds Timer
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30 Seconds Timer
35 Seconds Timer
40 Seconds Timer
45 Seconds Timer
50 Seconds Timer
60 Seconds Timer
90 Seconds Timer
About 123 Seconds Timer
Set a 123 Seconds countdown timer for free. This online timer works offline as a PWA, supports audio alerts, keyboard shortcuts, and repeat mode.
How to use
Click the Start button to begin the countdown. Use +1m/−1m buttons to adjust time quickly, or click the timer display to set a custom duration. Press Space to pause/resume, R to reset, and F for fullscreen.
Features
- Works completely offline after first load (PWA)
- Multiple timers (add with the + button)
- Fullscreen mode for presentations and classrooms
- Repeat mode for continuous intervals
- Browser notifications (with permission)
Use cases for 123 Seconds
- Pomodoro short breaks
- Tea steeping
- Quick workouts
- Lightning talks
- Kitchen prep
Tips for using this timer
- Press Space to start/pause
- Press R to reset timer
- Press F for fullscreen mode
- Click the + button to add multiple timers
- Enable Repeat mode for continuous intervals