Skip to content

45 Minute Timer

Ready

45:00
45:00

Presets

Browse more
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

    Forty-five-minute countdown

    A 45-minute period, ready for the room

    Forty-five minutes matches many school periods and exam sections. This page opens at 45:00. Put it on the projector, press Start, and let the alarm end the block without watching a wall clock.

    A visible 45-minute countdown reduces “how much time is left?” interruptions. Sleep and fullscreen keep the digits large. You can still add a minute if the bell schedule slips.

    1. 01

      Start at 45:00

      Start the forty-five-minute countdown when the period begins. Queue a 5-minute wrap-up if you want a warning before the alarm.

    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.

    Classroom length without a dedicated hardware timer

    Hardware timers die or get borrowed. This browser timer is the same tool students can reopen at home. For a full hour lecture, use the 60 minute timer; for a short station, try 10 or 15 minutes.

    Frequently asked questions

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

    Can the whole class see this 45 minute timer?
    Yes. Fullscreen on a shared display. Display mode and high-contrast looks help from the back row.
    What if the period is 50 minutes, not 45?
    Start this 45:00 timer and press +1 min five times, or tap the dial and type 50. The 45-minute page is the preset; the dial is still editable.
    Will talking or other tabs stop the 45 minute countdown?
    No. It uses an end deadline. Other tabs may slow animations, but the remaining time stays correct when you look back.
    Can I embed a 45 minute timer in a lesson site?
    Yes. Copy the iframe from the embed section. Set the widget’s default duration to 2700 seconds so students see 45:00 inside the frame.