Spin Rate Calculator

FB: 2000-2500 RPM
Curve: 2500-3000 RPM
Slider: 2300-2800 RPM
Change: 1500-2000 RPM

Calculate spin efficiency to understand how well your pitches are performing.

Pitch Velocity (MPH)

Total RPM

Pitch Type

Spin efficiency compares your actual spin to what's expected for your velocity. Higher efficiency means more movement.