60 min countdown

Exam Timer

This is a countdown built for a room rather than a wrist. It opens fullscreen-first — one large, clean number meant to be thrown onto a classroom projector or a shared screen — and it stays completely silent until time is up. That silence is deliberate: an interim beep is exactly what you do not want cutting through forty heads mid-thought, so nothing sounds until the very end. It is written for teachers running timed assessments, invigilators supervising a formal exam, and students doing realistic practice under exam conditions. In all three cases the value is the same — a single authoritative clock everyone in the room can see and trust, with no ambiguity about how long is left. To use it well, mirror how real invigilation works. Many formal exams separate reading time from writing time; if yours does, run the reading period on its own, then start a fresh countdown for the writing. Standard practice is to announce time verbally at set points — often "five minutes remaining" and a final "pens down" — precisely because the clock itself is silent. Project the number, but keep speaking to the room. The non-obvious tip concerns access arrangements. A single projected timer cannot represent a class where some students have 25% or 50% extra time, and improvising that arithmetic under pressure invites mistakes. The clean solution is to prepare each duration in advance: open this page in a separate tab for each time allowance, set the right length, and use the copy-link button so the exact configuration is saved and reloadable. Project the standard timer for the room and keep the extended-time timers on your own screen, each ending at the correct moment, rather than doing sums while supervising. Because it is silent by design, the usual background-alert caveats matter less here — there is no interim sound to miss. Do keep the tab open and the display awake for the full session, though: if the projector or laptop sleeps, the countdown is no longer visible to the room, even though it keeps correct time internally and shows the accurate finished state when you return. There is no server behind it, so a closed tab simply stops displaying — reopen and it reports exactly how long ago time expired.

This timer keeps the exact time even if you switch tabs. If this tab or your browser closes, nothing can alert you at the exact finish time — there's no server behind this, by design. Come back any time and we'll tell you honestly how long ago it ended.