Bell Countdown
Enter your bell schedule once and this full-screen display always shows the current period and a live countdown to the next bell, ringing a tone the instant each period ends.
Built by the AbraCalc team
How to play
- List each period as "Name, HH:MM" on its own line, using the 24-hour end time of that period.
- Check the preview line under the schedule box to confirm every period parsed correctly.
- Tap Show Countdown to go full screen — the current period and time to the next bell update live every second.
- Listen for the alarm tone and amber flash exactly when a bell time is reached, then read the new period name automatically shown next.
Type your school's bell schedule once, one period per line, and Bell Countdown turns it into a full-screen pacing clock that always knows where the day stands. It reads the current time, works out which period is active right now, and counts down in giant tabular digits to the moment the next bell should ring. When that moment arrives, the screen flashes amber and a built-in alarm tone plays automatically, so nobody has to watch the clock or manually start a new timer between periods. Because the schedule lives entirely in the browser and re-parses itself as you type, teachers can adjust times for an assembly day or early release in seconds, then leave the display running on a classroom screen or projector for the rest of the day.
Frequently asked questions
- What format does the schedule need to be in?
- Each line is the period name, a comma, then the 24-hour end time of that period, like "Period 2, 09:55". Lines that don't match this pattern are skipped and reported so you can fix them.
- What happens after the last bell of the day rings?
- The display switches to a "day complete" message naming the final period instead of showing a countdown, so it's clear the schedule has finished rather than showing a stuck or negative timer.
- Does the countdown use my computer's actual clock?
- Yes. It reads your device's current time every second and compares it against the bell times you entered, so the schedule needs to be entered using the same time zone your computer is set to.