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30 Minute Timer

Ready

30:00
30:00

Presets

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Focus music Off
Ready 00:30 Ember focus D · display mode

Timer settings

Set a custom duration and title, then fine-tune look and alarm if you need to.

Timer setup
Appearance

Looks on the stage already set the scene. Here: digit style, photo gallery / custom photo, and display blur.

Digit style

Custom photo

Sound
Volume

Ambient sound

Soft background while the timer is running. Ducks when the alert rings. Off by default.

Saved setups

Favorites

No favorites yet. Set up a timer you like, then tap "Save current". Try a preset Open Online Countdown

History

No completed timers yet. Finish a countdown to see it here. Try a preset Open Online Countdown

    Embed timer

    Add a compact countdown widget to your site. Timing stays in the visitor’s browser.

    Keyboard shortcuts

    Space
    Start / pause
    R
    Reset timer
    M
    Add one minute
    F
    Toggle fullscreen
    S
    Toggle sleep mode
    D
    Toggle display mode
    ?
    Show this help
    Esc
    Close dialog / exit fullscreen

    Save favorite

    Learn more

    Thirty-minute countdown

    A half-hour on the clock

    This page sets 30:00 for you. Start it for a class segment, a workout, a cooking stage, or a meeting that should not drift. The same online timer engine powers alerts, sleep mode, and share links.

    Thirty minutes is a natural calendar slot: one episode of deep work, one lab station, one oven window. Leave the tab open; the countdown does not depend on the page staying in the foreground.

    1. 01

      Start at 30:00

      Press Start for thirty minutes. Add a minute if a lecture ran over, or queue 5 minutes for questions at the end.

    2. 02

      Start the countdown

      Press Start or Space. Progress updates on a circular dial, and the face shows when the timer ends. Pause anytime, add +1 min, queue another timer, or go fullscreen / sleep for a distraction-free display. The tab title shows remaining time while you work elsewhere.

    3. 03

      Hear the alert & keep going

      When time is up, stop the alarm with one tap. Start the next queued timer, review local history, export CSV, or copy a shareable link. A refresh restores an in-progress countdown on this device.

    Half an hour, visible in the browser

    Phone timers hide in the notification tray. A 30-minute face on a monitor is easier for a room to see. If your block is a full hour, use the 60 minute timer instead.

    Frequently asked questions

    Setting the dial, presets, alerts, and embeds — quick answers.

    Can I put a 30 minute timer on a second screen?
    Yes. Fullscreen or display mode fills the monitor. Sleep mode hides other chrome so the room only sees the remaining time.
    Is the 30 minute timer accurate if I lock the computer?
    The end time is a timestamp, so sleep can delay the alarm until the machine wakes. For a classroom clock, keep the display awake with wake lock while it runs.
    Can I name this 30-minute run?
    Yes. Set a title in timer settings so the alarm and history show “Lab A” or “Oven” instead of a blank 30:00.
    How do I start a 30 minute timer every day?
    Bookmark this URL. Each visit loads 30:00 again. There is no account or cloud schedule — it is a page you open when you need the half hour.