Timers & Clocks
Visual classroom timer
Pick an activity, press start and put it on the board. The ring turns from green to amber to red, so everyone can see how long is left without reading a number.
10:00
Activities
- Runs in your browser
- No account required
- Free to use
How it works
Colour carries the message
Green while there is plenty of time, amber for the last quarter, red for the last tenth. Younger students read it instantly, and nobody has to ask how long is left.
Spoken cues at the points that matter
With voice turned on it announces halfway, one minute left and ten seconds, then "time is up" — useful when the class is heads-down and not watching the screen.
What it does
Activity presets
Think-pair-share, clean-up, group work, silent reading, quiz, exams, meetings and breaks.
Built for projection
Very large numerals, a thick progress ring and a fullscreen mode that hides everything else.
Sound and voice
A bell at the end and optional spoken warnings, with volume and mute.
Accurate in a background tab
Browsers throttle timers in tabs you are not looking at — often to once a minute. This measures against the clock instead of counting ticks, so switching tabs, or the laptop sleeping, changes nothing about when it finishes.
Practical advice
Getting a better result
- Press F before you project — the ring and numbers scale to the screen.
- Space starts and pauses from the keyboard without touching the mouse.
- Turn on voice announcements in settings for spoken warnings.
Questions
Things people ask
Is it suitable for exams?
Yes. It is accurate to the second against the device clock, does not drift, and the screen is kept awake while it runs where the browser allows it.
Can students see it from the back of the room?
In fullscreen the numbers scale with the screen width and the colour ring is readable long before the digits are.
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