How to Use ClockAura
ClockAura is a hub of free online timers, stopwatches, alarms, countdowns and ambient sounds — every tool runs in your browser with no sign-up. This page is the full walkthrough: which tool to pick for which job, the keyboard shortcuts that work everywhere, how to install the site as a Progressive Web App, how to share a timer with someone else, and the small features most users do not discover on their own. Whether you are visiting for the first time or have been using ClockAura for months, the tips below cover everything the site can do.
Picking the right tool is the first step. ClockAura offers a full set of timers, stopwatches, clocks and ready-made preset durations. Use the [Stopwatch](/stopwatch) when you want to count UP from zero and record laps — running, swimming, cooking experiments, presentation rehearsals. Use the [Countdown Timer](/countdown-timer) when you want to count DOWN from a chosen duration — boiling pasta, study breaks, kids' screen time. Use the [Pomodoro Timer](/pomodoro-timer) for automated 25/5/15 focus cycles. Use the [Interval Timer](/interval-timer) for HIIT, Tabata or any custom work/rest pattern. Use the [Alarm Clock](/alarm-clock) when you want an alarm at a specific time of day. Use the [Egg Timer](/egg-timer) for one-tap 3/5/7/10 minute presets. Use the [World Clock](/world-clock) and [Meeting Planner](/meeting-planner) for cross-timezone coordination. Use the [Event Countdown](/event-countdown) and [Countdown to Date](/countdown-to-date) for shareable countdowns to future dates. Use the [Random Picker](/random-picker) wheel for fair name-drawing. Use the [Ambient Sounds](/ambient-sounds) page for focus and sleep background audio.
Every timer page supports the same five keyboard shortcuts. Press Space to start or pause. Press R to reset. Press F to enter full-screen mode — useful for classrooms, gyms and projectors. Press L on the Stopwatch page to record a lap. Press Escape to leave full screen. Shortcuts work whenever the page is focused and you are not typing into an input field. On phones and tablets, the same actions are large tap targets — Start, Pause, Reset, Lap, Full screen.
Timers keep running when you switch tabs. The elapsed or remaining time is calculated from absolute timestamps, not from setInterval ticks, so the displayed time stays accurate even if the browser throttles background tabs. The browser tab title also shows the remaining time live — switch to another tab and you can still see how long is left from the tab bar. When a countdown finishes, the screen flashes orange, the alarm plays four times, and the tab title switches to "Time's up!" so you notice from another tab. If you have granted notification permission, ClockAura pops a desktop notification too.
Sharing a timer is one click. The Countdown Timer's URL encodes the chosen duration — paste the URL in a chat, email or message and the recipient sees the same timer. Saved date countdowns and event countdowns each have a unique short slug — copy the link from the "Share" button and anyone with the link can view your live countdown without an account. The Embed Builder at [/embed-builder](/embed-builder) generates an iframe snippet you can paste into your own website or blog to embed any ClockAura timer.
Installing ClockAura as a Progressive Web App takes about ten seconds. On Chrome, Edge or Brave on desktop, look for the install icon in the URL bar (a small monitor with a downward arrow) — click it and ClockAura runs in its own window without browser chrome. On iOS, tap the Share icon in Safari and choose "Add to Home Screen". On Android, Chrome offers an "Install app" option in its menu. Once installed, the site works offline (all assets are cached) and feels like a native timer app. There is no app store, no review process and no subscription.
ClockAura saves your preferences locally — your last-used sound, your preferred volume, the world-clock cities you have added, your interval-timer presets, your random-picker lists, your Pomodoro session history. Nothing is tied to your name or email; it is all keyed to an anonymous client identifier stored only in your browser. Clearing your browser data resets everything. You can use the site from multiple devices, but each device has its own settings (no cloud sync, by design). This is why we do not require a sign-up — there is nothing to log into.
A few pro tips that most users discover by accident. The Wake Lock API keeps your phone or tablet screen on while a long timer is running — useful for kitchen timers, gym intervals and presentations. The Cookie consent banner appears once; choose "Essential only" if you do not want personalised ads. The site's dark theme follows your system preference but can be overridden in the small theme toggle in the page header. The /classroom-mode, /exam-mode and /presentation-mode routes give you a chromeless full-screen layout perfect for projectors. Bookmark the preset timer URLs (e.g. /5-minute-timer, /25-minute-timer) for one-click access from your phone's home screen.
If you have a question that this page does not answer, the FAQ on the [home page](/) covers the most common questions, the [How to use](/how-to-use) page is this guide itself, and the [Contact page](/contact) gets a reply within seven days. Bug reports and feature suggestions are read carefully — most of ClockAura's tools started as a reader's idea.