12 Hour Timer

Summary

Click start for a 12-hour countdown you can adjust up or down, with presets for fasting windows, overnight cooking, and long flights, plus an alert when time runs out.

How it works

1. Click "Start" to begin the 12-hour countdown, or pick a preset first.
2. Use "-30m" and "+30m" to adjust the duration before starting.
3. Watch the ring shrink and the clock count down in hours, minutes, and seconds.
4. Click "Fullscreen" to project a large countdown on screen.
5. Hear a short beep and see the screen flash when it hits zero.
6. Click "Pause" at any time and "Resume" to continue from where you left off.
7. Click "Reset" to return to the last selected duration and run it again.

Use cases

• Track a 12-hour intermittent fasting or eating window.
• Time an overnight slow cooker or low-and-slow smoker session.
• Track remaining time on a long-haul flight or overnight layover.
• Time a 12-hour work shift or overnight on-call block.
• Time an overnight dough proof or fermentation window.
• Set a limit for an overnight sleep tracking or nap session.
• Time a 12-hour road trip driving block across multiple stops.
• Time a proctored take-home exam window with a hard cutoff.

Frequently Asked Questions