Joystick circularity test.

Free joystick circularity test for Xbox, PS5 and PC

Circularity is a useful repair and controller comparison signal that shows whether the stick's outer boundary is evenly distributed.

What is joystick circularity error and why it matters

A perfect circular response reaches a consistent distance at every angle. Real controllers can show different diagonal values because of the gate, sensor, calibration, or software curve. The outer shape should be interpreted together with center offset, axis symmetry, and smoothness rather than as a standalone quality score.

How to measure analog stick circularity online

Use slow, deliberate rotations around the full outer gate and repeat each direction. Start from center, make several complete circles, and finish by releasing the stick. Compare the same controller after changing dead-zone or sensitivity profiles so only one variable changes.

• Rotate both clockwise and counterclockwise
• Avoid cutting across the center during an outer-range sample
• Repeat the test after reconnecting or changing a profile

What is a good controller circularity test result

There is no universal percentage that is ideal for every controller. Some games and firmware deliberately reshape diagonal output, while square gates naturally produce a different boundary. Look for a repeatable, balanced shape without severe clipping, spikes, or one direction that consistently fails to reach the expected range.

Circularity test versus stick drift and dead zones

Circularity describes the outer response boundary; stick drift describes unwanted movement near rest. A controller can have a good outer circle and still drift, or remain centered while undershooting one direction. Run both tests before deciding whether calibration, a game profile, or hardware needs attention.

Frequently asked questions

Short, practical answers to help you read this test result and decide what to do next.

What is a good circularity test result for a controller?

There is no universal ideal percentage. Look for a repeatable, balanced outer shape without severe clipping, spikes, or one direction that consistently undershoots. Square gates and some firmware curves intentionally produce a non-circular boundary, so interpret the shape alongside center offset and smoothness.

How do I measure analog stick circularity accurately?

Use slow, deliberate rotations around the full outer gate, both clockwise and counterclockwise, starting from center. Make several complete circles, avoid cutting across the center, and repeat after reconnecting. Change only one setting at a time when comparing profiles.

Is circularity the same as stick drift?

No. Circularity describes the outer response boundary of the stick, while drift describes unwanted movement near the center resting position. A controller can have a clean outer circle and still drift, or stay centered while undershooting one direction. Run both tests before deciding on calibration or repair.

Why does my stick show uneven diagonal values on the circularity test?

The gate shape, sensor, factory calibration, or a software response curve can reshape diagonal output. Some games and firmware deliberately modify diagonals. Compare the result with the same controller after changing your dead-zone or sensitivity profile to see whether the cause is hardware or software.