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Perception and spatial reasoning tests

Visual perception and spatial reasoning tests that run in your browser: rotate, fold and cut shapes in your head, judge lengths, angles and colors by eye, and spot what changes. Free, with no download.

Spatial reasoning

Turn, fold, cut or count shapes in your head.

  • Mental Rotation

    Same shape, or its mirror image?~1 min

  • Paper Folding

    Fold, punch, unfold: where are the holes?~2-3 min

  • Cube Net

    Which cube does this net fold into?~2-3 min

  • Cross-Sections

    Picture the shape a cut makes through a solid.~2-4 min

  • Block Counting

    Count every cube in a stack, hidden ones too.~2-3 min

Judging by eye

Length, angle, color, number and time, judged without measuring.

  • Line Length

    Match a line's length by eye.~1-2 min

  • Guess the Angle

    How many degrees is it? Estimate by eye.~1-2 min

  • Color Difference

    One tile is a slightly different shade. Find it.~1-3 min

  • Color Hue

    Drag the colors back into a smooth gradient.~3 min

  • Dot Counting

    Dots flash for a moment. How many were there?~1 min

  • Optical Illusion

    Make two lines or circles look equal. How far off are you?~2 min

  • Time Perception

    Stop a hidden timer at the target time.~1 min

  • Temporal Bisection

    Learn a short and a long. Is each new one closer to short or long?~2 min

Spotting and tracking

Find a hidden shape, spot a change, follow what moves or notice what's at the edge.

What is spatial reasoning, and which tests measure it?

Spatial reasoning is picturing a shape and working out what happens when it turns, folds or is cut. Mental Rotation, Paper Folding, Cube Net, Cross-Section and Block Counting each ask a version of that question, and each is scored by the number you get right.

Are these like the spatial tests in aptitude tests?

They use the same ideas, but not the same questions, so scores can't be compared. The Paper Folding Test follows a test in ETS's Kit of Factor-Referenced Cognitive Tests (1976 edition) with its own drawings. The Mental Rotation Test goes back to Roger Shepard and Jacqueline Metzler's experiment of 1971, with flat figures instead of their 3-D blocks. And the Block Counting Test asks for the total in a stack, where the Air Force Officer Qualifying Test's subtest of that name asks how many blocks touch a given one.

Is this an eye test?

No. None of these can check your eyesight, your color vision or your field of view: they run on an ordinary screen, which can't show the precise colors or controlled light that real vision tests need. If you notice a change in your vision, see an optometrist or an eye doctor.