Online Hourglass Timer
A virtual hourglass with simulated falling sand that keeps exact time. Presets from 1 to 60 minutes plus a custom time, four sand colors, three frames, flip it or lay it down to pause, and an optional end chime.
How the Online Hourglass Works
Pick a duration and the hourglass flips over and starts. The sand is simulated: it flows through the neck at a steady rate, a funnel opens in the top bulb, and the pile below grows at its natural slope. The sand is tied to an exact timer, so the glass runs out on the second, even if you switch tabs.
Flip it at any time and the sand runs back, like a real one: with 2 minutes gone on a 5-minute glass, a flip leaves 2 minutes to run. Lay it on its side to pause, and hide the numbers if you only want to watch the sand.
The sand shows how much time has gone and how much is left at a glance, without reading numbers.
Falling grains, a funnel crater and small avalanches on the pile, with a synthesized trickle that follows the flow.
Tap to flip, drag to turn it by hand, or lay it on its side to pause. It behaves like the real object.
What the Research Says About Visual Timers
There is no research on hourglasses as such, but there is some on visual timers and on how attention changes the feel of time. In a small classroom study with two children with autism, visual supports that included a timer showing time running out shortened the delay before moving on to the next activity.
In Dettmer et al. (2000), both children switched activities sooner and needed fewer prompts when a visual schedule and a timer were used. It was a single-case design with two participants, so it shows what is possible, not what to expect.
A meta-analysis by Block and Zakay (1997) found that people who know they will judge a duration, and so pay attention to time, tend to judge it as longer than people who are not watching time. Staring at the sand can make minutes feel longer; letting it run at the edge of your view works the other way.
No study has tested an on-screen hourglass for stress or anxiety. Research on visual timers is small and mostly done with children in classrooms, and a review of timing research (Grondin, 2010) shows how much time perception depends on attention, mood and context. Use the hourglass as a clear way to see time, not as a treatment.
When to Use the Hourglass Timer
- For a short break, like 5 minutes away from the screen
- For study or work blocks you can see running down
- To time a breathing exercise or a pause without watching a clock
- In class or at home, for turns, tasks and transitions
What You May Notice
- Time left is easier to judge at a glance than with numbers
- The falling sand gives your eyes one slow, steady thing to follow
- Flipping and tapping the glass gives your hands something to do
- A clear end, with a soft glass chime if you want one
Tips for Using the Timer
Press T to hide the readout if a countdown makes you tense. The sand still shows how much is left.
Press P or use the pause button to lay the hourglass on its side. Stand it up to carry on from the same point.
Start a 1- or 2-minute glass and breathe slowly until the sand runs out. There is nothing to count.
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