What is eyeballing?
Eyeballing means judging size, amount or position without a ruler or a scale. We do it all day: hanging a picture in the middle of a wall, pouring roughly the right amount of water, deciding whether there is time to cross before the light changes.
Each test here isolates one of those senses and turns it into a number. The circle tests hand and eye coordination, the eyeballing test and angles test spatial judgment, color memory and odd color out test color perception, time sense tests your inner clock, the pitch test checks how finely you hear pitch, and dot estimation tests your sense of quantity.
Reading your results
- These tests are for fun and practice. None of them is a medical assessment.
- Screen size and brightness, mouse or touch, speakers or headphones all change results. Comparing your own scores on the same device is the fairest way.
- Your records are saved only in this browser and never sent to a server.