8 Hour Timer

Click start for an 8-hour countdown you can adjust up or down, with presets for work shifts, flights, exams, and slow cooking, plus an alert when time runs out.

8 Hour Countdown

8:00:00
Presets

Summary

Click start for an 8-hour countdown you can adjust up or down, with presets for work shifts, flights, exams, and slow cooking, plus an alert when time runs out.

How it works

  1. Click "Start" to begin the 8-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

  • Time a standard 8-hour work shift or on-call block.
  • Track remaining time on a long-haul flight or layover.
  • Time a full workday of focused study or exam prep.
  • Time an overnight slow cooker or low-and-slow oven cook.
  • Time an 8-hour road trip driving block before a break.
  • Time an overnight fast or intermittent-fasting window.
  • Set a limit for a full-day gaming or streaming session.
  • Time a multi-hour proctored or take-home exam window.

Frequently Asked Questions

Last updated: 2026-07-21 · Reviewed by Nham Vu