1 Second Timer

1. Click “Start” to begin the 1-second countdown.
2. An alert will notify you when 1 second have elapsed.
3. Use the “Pause” button to temporarily halt the 1 second timer.
4. Click “Reset” to restart the timer at 1 second.
5. Adjust the duration using the dropdown menus for hours, minutes, and seconds.
6. Toggle sound alerts using the “Sound” button.
7. Enter fullscreen mode by clicking the “Fullscreen” button.

1. Reaction time tests: Measuring quick responses.
2. Photography: Timing short exposure shots.
3. Fitness: Timing short bursts in high-intensity interval training (HIIT).
4. Game mechanics: Timing quick actions in video or board games.
5. Cooking: Timing very short tasks, like flipping something quickly on a griddle.

In just 1 second…

• The average human heart beats once.
• A person blinks approximately once every 4 seconds.
• A car traveling at 60 mph covers 88 feet.

A 1-second timer is equivalent to:

• 0.000278 hours
• 0.016667 minutes
• 1,000 milliseconds

For a comprehensive time equivalent, including microseconds, nanoseconds, days, weeks, months, and years, please visit our Time Conversion Tool.