A hidden amount of time passes without showing you how long. Once it stops, guess the time!
This test asks you to judge how much time has passed without looking at a clock. Psychologists call this "time perception." The brain doesn't run on an exact clock - it relies on a rough "internal clock" that can drift from real time depending on what you're focused on or doing.
On this site's scale, an error of 0.3–0.6 seconds is an ordinary sense of time, 0.3s or less is accurate, and 0.1s or less is the "superpower" band. These are our own bands, not official statistics.
The internal clock tends to run short when you're absorbed and long when you're bored, so the same person's error can flip direction from one try to the next.
| Error | Rating |
|---|---|
| Under 0.1s | Time-sense superpower |
| 0.1 - 0.3s | Sharp time sense |
| 0.3 - 0.6s | Average time sense |
| 0.6 - 1.0s | A bit off |
| Over 1.0s | Free spirit |
A random amount of time between 1 and 10 seconds passes, then the screen changes. Without seeing any numbers or clock, you type in how many seconds you think passed. The smaller the gap between your guess and the real elapsed time, the better your score. Up to 8 players can compete in the same round.
A lot of people count a steady beat in their head ("one, two, three...") or use their breathing rhythm to track time. That said, some argue this measures counting ability more than pure time perception - if you want to test the real thing, try guessing without counting at all.