Simple to Use
Just press start and the 100 hour countdown begins immediately. No setup required.
Visual Progress
Watch the progress bar decrease as time counts down to easily track remaining time.
Audio Alert & Notifications
Get notified with sound and browser notifications when your 100 hour are up, even if you're in another tab.
How to Use This 100 hour Timer
This free online 100 hour timer is perfect for timing various activities. Simply press the Start button to begin the countdown from 100 hour. You can pause at any time and reset to start over.
Cooking
Perfect for timing recipes that need a quick 100 hour cooking time.
Workouts
Time your exercise intervals or rest periods during HIIT workouts.
Studying
Use the Pomodoro technique with 100 hour sessions or breaks between study periods.
Presentations
Keep your speeches or meeting contributions concise and on time.