Free Timers for Teachers
ClockAura is a free toolkit of classroom timers built for teachers. Everything here is projector-friendly, readable from the back row, and free of the auto-playing video ads and sign-up walls that clutter most timer sites. Bookmark it on your teaching laptop and you have a one-click timer for every part of the lesson — transitions, tests, group work, brain breaks and independent study.
The Classroom Timer is a chromeless, full-screen countdown with digits large enough to read from twenty metres away. There is no navigation bar, no footer and no advertising over the timer — just the time remaining, a bright end flash and a loud alarm the whole room can see and hear. It works on a projector, an interactive whiteboard, or a TV you cast your laptop to, on Chromebooks, iPads and Windows machines alike.
For younger children and SEN learners, the Visual Timer shows time as a shrinking coloured disc that turns from green to amber to red — the same idea as the classic Time Timer device, free in your browser. A no-numbers mode makes "how much longer?" obvious to early-years pupils and to autistic and ADHD learners who find abstract minutes hard to picture. The Exam Timer strips the screen back to a distraction-free dark layout with an amber halfway flash and a red final minute, built for invigilated tests, timed practice and mock exams.
Two more tools round out the set. The Random Name Picker takes your class list and spins for a fair, bias-free way to cold-call, form groups or decide who presents first — and your roster saves in the browser for next lesson. The Pomodoro Timer runs auto-cycling focus and break blocks for study halls and revision, while the Interval Timer handles PE warm-ups, fitness circuits and station rotations with a clear beep at every switch.
Every ClockAura tool runs entirely in the browser, keeps the screen awake with the Wake Lock API so a projector never dims mid-countdown, and works offline once the page has loaded. There is no account, nothing to install, and no personal data collected. New tool ideas are always welcome — many of these started as a teacher's request. Grab the free printable classroom-transition cheat sheet, pin it by your board, and use whichever timer fits the moment.