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 keeps running if the connection drops once the page has loaded. There is no account, nothing to install, and no names or email addresses 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.