# Classroom Timer Clock — Full Screen Exam Clock | WherOra

> A full-screen classroom clock and 15-minute to 4-hour exam timer, with large digits, quiet ten-second steps and day or night mode. No account needed.
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> Markdown version of https://wherora.com/timer/ for AI agents and assistants. Live clocks and interactive tools need JavaScript: open the page in a browser to use them.

TIME. IN FOCUS.

# Classroom Clock & Timer

A simple clock and timer for full screen display.

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Time’s up.

Switch to:[Exam Mode](https://wherora.com/exam-clock/)[Countdown](https://wherora.com/countdown/)

Timer length 30 minutes

15 minutes4 hours

Minutes

Choose a duration, then press Start.

Your device’s local time ·
Seconds advance in quiet 10-second steps. Press Esc to leave full screen.

Check your device’s time before an exam. Keep this tab open. When browser storage is available, an active timer resumes after refresh in this tab. No alarm sound.

## How to use the classroom clock

1. **Show the time.** The page opens as a large clock in your device’s local time. Choose 12-hour or 24-hour; your choice is remembered on this device.
2. **Go full screen.** Press **Full screen** to fill a projector, smartboard or TV with the digits. Press **Esc** or **Exit** to come back.
3. **Count down instead.** Choose **Timer Mode**, set a length from 15 minutes to 4 hours with the slider or the minutes box, then press **Start**. The display counts down and shows “Time’s up.” at zero.

## Where it works well

**Classrooms and exams:** a plain clock at the front of the room, with nothing to click or scroll and no ads. For exams with written instructions or a time-left bar, switch to Exam Mode above. **Talks and workshops:** keep a session to time without checking your phone. **Focus sessions:** run a 25- or 45-minute work block on a second screen.

## Common questions

### Does the timer make a sound when time is up?

No. It shows “Time’s up.” on screen and stays silent, so it never disturbs a quiet exam room. If you need an alarm, set one on your phone as well.

### Why do the seconds move in 10-second steps?

A ticking second hand pulls eyes to the clock. Ten-second steps keep the time accurate enough for a classroom while staying calm to look at.

### Which time does the clock show?

Your device’s own clock and time zone, shown under the controls. Most computers set their time automatically; check it before an exam.

### What happens if I refresh the page?

A running timer picks up where it left off in the same tab when your browser allows storage. Closing the tab ends it.

### What is the difference between Timer Mode and Exam Mode?

Timer Mode replaces the clock with a countdown. Exam Mode keeps the current time on screen and adds your instructions underneath, with an optional bar showing the time left.

### Do I need an account or a download?

No. It runs in any modern browser, and once the page has loaded the clock keeps going even if the internet connection drops.

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Source: https://wherora.com/timer/ · Site guide for agents: https://wherora.com/llms.txt · How times are calculated: https://wherora.com/about/methodology/