Smash Factor
The ratio of ball speed to club speed, measuring energy transfer efficiency.
Full Definition
Smash factor measures how efficiently energy is transferred from the clubhead to the ball at impact. A higher smash factor means more of the clubhead's energy is being converted into ball speed. It's one of the most important indicators of strike quality because it combines the effects of center contact, face angle, and dynamic loft into a single number.
Formula
Optimal RangeGeneral guidance based on tour averages. Your optimal range depends on swing speed, physical attributes, and individual technique. Many golfers succeed with metrics outside these ranges.
Driver: > 1.45 | Irons: > 1.30 | Wedges: > 1.08
Why It Matters
A low smash factor means you're leaving distance on the table. Even with fast club speed, poor energy transfer results in shorter shots. Improving smash factor is often the fastest way to add distance without swinging harder.
Related Terms
Ball Speed
The speed of the ball immediately after impact with the clubface.
Club Speed
How fast the clubhead is moving at impact, measured in mph.
Impact Offset
The horizontal distance from the center of the clubface to where the ball was struck (toe-heel).
Impact Height
The vertical distance from the center of the clubface to where the ball was struck (high-low).
How SimSights Helps
SimSights automatically tracks your smash factor across all your shots, showing you trends over time and comparing your numbers to tour benchmarks. Our AI analysis explains what your smash factor means for your specific swing.
Request Beta Access