Launch monitors

Launch monitor data parameters explained

Launch monitor listings quote parameter counts. Here is what the common ones mean and who needs them.

By FOREference Editorial · Updated 30 Sep 2026

Ball data

ParameterMeaning
Ball speedSpeed of the ball just after impact
Launch angleVertical angle the ball leaves at
Launch direction (horizontal launch)Left/right start direction
Back spinRotation that lifts the ball
Spin axis / side spinTilt of the spin axis — what curves the ball
Carry / total distanceFlight distance / including roll
Apex, descent anglePeak height and landing angle

Club data

ParameterMeaning
Club speedClubhead speed before impact
Smash factorBall speed ÷ club speed — strike efficiency
Club pathDirection the club travels through impact
Face angleWhere the face points at impact
Face to pathFace relative to path — the main curve driver
Attack angleUp or down strike
Dynamic loftLoft delivered at impact
Impact locationWhere on the face the ball was struck

Instructors and fitters lean on club data; see launch monitors with the most club data.

Products mentioned

Figures marked as FOREference calculations show their working; product figures come from the sources on each product page. How we work