Exam Clock & Invigilator's Chronometer — Free Online Exam Timer for Invigilators
Invigilator's Chronometer is a free, full-screen exam clock built for invigilators and exam halls. Set exam duration, display a large analog clock with live countdown on a projector or Android smart TV, and get automatic voice and sound announcements at each hour elapsed and at 1 hour, 30 minutes, 15 minutes, and 5 minutes remaining — no installation required.
Why invigilators use this exam clock
Exam halls need a clock everyone can read from a distance, clear remaining time, and reliable alerts without juggling phones or desktop apps. This browser-based exam clock runs on any laptop, interactive display, or smart TV, stays awake during the exam, and supports school logos and paper titles on screen.
How to use the free online exam clock
- Open https://coodeverse.com/tools/clock on the room PC, projector machine, or Android smart TV browser.
- Open the side panel (☰). Choose a duration preset or enter hours and minutes. Optionally upload a logo and set the three heading lines.
- Leave Voice announcements and Keep screen awake on. On a TV, tap the page once, then Start, so audio can unlock.
- Press Start (or Space), close the panel, and enter Fullscreen (button or F).
- The exam clock announces each hour elapsed, then 1 hour / 30 / 15 / 5 minutes remaining, and finally that exam time is completed.
Automatic announcement schedule
| When | What is announced |
|---|---|
| Each full hour elapsed | e.g. “1 hour has passed. 2 hours remaining.” |
| 1 hour remaining | “One hour remaining.” |
| 30 minutes remaining | “Thirty minutes remaining.” |
| 15 minutes remaining | “Fifteen minutes remaining.” |
| 5 minutes remaining | “Five minutes remaining.” |
| Time reaches zero | “Exam time completed.” |
Frequently asked questions
What is Invigilator's Chronometer?
It is a free online exam clock for invigilators and exam halls, with a large full-screen analog clock, countdown, and automatic voice and sound announcements. No install or account is required.
Is this an online exam clock?
Yes. Invigilator's Chronometer is a free online exam clock with a large analog face, digital remaining time, and automatic announcements. It works full-screen on projectors and Android smart TVs with no installation required.
Can I use this as a free analog exam clock for the exam hall?
Yes. The large analog clock is designed to be readable across the room. Use fullscreen mode on a projector or smart TV so every candidate can see the exam clock and remaining time.
Does the exam timer announce every hour?
Yes. For exams longer than one hour, it announces each full hour that has passed and how much time remains. It also alerts at 1 hour, 30 minutes, 15 minutes, and 5 minutes remaining, and when the exam ends.
Does it work on Android smart TV?
Yes. Layout is tuned for large screens. Sound uses Web Audio beeps so alerts still play when browser speech is unavailable. Use Chrome if possible, tap Start once to unlock audio, then fullscreen.
Is the online exam timer free?
Yes. Completely free — no account, no subscription, no installation.
Can I show the exam clock on a projector?
Yes. Fullscreen mode is designed so remaining time and the analog clock are readable across an exam hall on a projector or large monitor.
Can I add a school logo and exam title?
Yes. Upload a logo and enter up to three heading lines (organization, subject, paper). They appear on the main display during the exam.
What keyboard shortcuts are supported?
Space = start/pause, R = reset, F = fullscreen, M = mute announcements.
Does the screen stay awake during the exam?
With Keep screen awake enabled, the page requests a screen wake lock so the display does not sleep while the timer is running (where the browser supports it).
Who this exam clock is for
School and university invigilators, exam officers, coaching centres, and certification halls that need a reliable, distraction-free exam clock with audible alerts — especially when the display is a projector or wall-mounted smart TV.