30 Minute Timer — Free Half Hour Timer Online
This free browser-based 30 minute timer is built for exact half-hour blocks. Press Start and dedicate yourself fully to whatever task you're running. When the 30 minutes are done, a tone plays automatically to signal that your time is up.
Unlike a phone timer that pulls you away from your work, this timer runs in a browser tab and displays the remaining time in the tab title — so you can check your progress with a glance at your taskbar without switching context. No installation, no account, no ads interrupting your workflow.
Frequently Asked Questions
A 30-minute timer represents exactly half an hour, making it one of the most natural intervals for scheduling and timeblocking. It's perfect for limiting meetings, fitting in a quick workout, setting a reading session length, or dedicating a block of time to responding to emails.
Yes. When the countdown reaches zero, a three-tone chime plays automatically using your browser's built-in Web Audio API. No plugin, extension, or download is needed. Keep your device volume on and the browser tab open. The alarm plays even if the timer tab is not the active tab.
Yes. Click Pause at any time to freeze the countdown without losing your progress. Click Resume to continue from exactly where it stopped. Click Reset to return to 30:00 and start fresh.
Yes. The timer continues counting down in the background regardless of which tab is active. The browser tab title updates every second (e.g., "28:32 — 30 Min Timer") so you can monitor progress directly from your taskbar. The alarm sounds when time is up regardless of which tab you are looking at.