Calm Timers
A 1 hour hourglass
This 1 hour sand timer runs for exactly 1 hour. Every grain is simulated, so you can watch the crater form on top and the pile build underneath while the time passes.
Need a different length? Use the presets beside the timer, or type any number of minutes.
Good for
- Hour-long focus or study blocks
- Full-length practice tests
- Timed workshops and meetings
- Baking and slow cooking checks
Other sand timers
How to use it
- Press Start (or the space bar) and the sand begins to fall. Press again to pause.
- When the top is empty, a soft chime plays. Press Flip & restart to turn the glass and go again.
- Press Flip any time to turn the hourglass over, just like a real one. The sand that has fallen becomes the time left.
- Pick a sand colour, turn on the gentle sand sound, or use Focus to hide everything but the hourglass.
Questions
Is the sand really simulated?
Yes. Every grain is its own pixel. Grains fall, slide and pile up on their own, which is why the top forms a crater and the bottom forms a cone, like real sand.
Is the 1 hour timer accurate?
Yes. The neck lets grains through at exactly the rate needed for the chosen time, so the glass empties right as the countdown reaches zero.
Does it keep running in another tab?
Yes. The timer counts real time, so it stays correct while you switch tabs, and the chime still plays when time is up.
Can I use it in a classroom?
Yes. It works on any projector or smartboard browser with no sign-up or install. Use Fullscreen and Focus for a clean, distraction-free view.
Is it free?
Yes. Calm Timers is free to use, with no account and no pop-ups.