Ball Speed To Swing Speed Calculator for swing speed, ball speed, or smash factor with club references, mixed speed units, and sensitivity results.
Ball Speed to Swing Speed Formula
The following formula is used to calculate the ball speed, swing speed, or efficiency based on the other two variables.
Variables:
- BS is the ball speed (e.g., mph, km/h, or m/s)
- SS is the swing speed (e.g., mph, km/h, or m/s)
- E is the efficiency as a percentage (e.g., 150% corresponds to a smash factor of 1.50)
To calculate the ball speed, multiply the swing speed by (efficiency/100). To find the swing speed, divide the ball speed by (efficiency/100). To determine the efficiency, divide the ball speed by the swing speed and multiply by 100.
| Ball Speed (mph) | Swing Speed (mph) | Swing Speed (km/h) | Swing Speed (m/s) |
|---|---|---|---|
| 60 | 40.000 | 64.374 | 17.882 |
| 70 | 46.667 | 75.103 | 20.862 |
| 80 | 53.333 | 85.832 | 23.842 |
| 85 | 56.667 | 91.196 | 25.332 |
| 90 | 60.000 | 96.561 | 26.822 |
| 95 | 63.333 | 101.925 | 28.313 |
| 100 | 66.667 | 107.290 | 29.803 |
| 105 | 70.000 | 112.654 | 31.293 |
| 110 | 73.333 | 118.019 | 32.783 |
| 115 | 76.667 | 123.383 | 34.273 |
| 120 | 80.000 | 128.748 | 35.763 |
| 125 | 83.333 | 134.112 | 37.253 |
| 130 | 86.667 | 139.476 | 38.743 |
| 135 | 90.000 | 144.841 | 40.234 |
| 140 | 93.333 | 150.205 | 41.724 |
| 150 | 100.000 | 160.934 | 44.704 |
| 160 | 106.667 | 171.663 | 47.684 |
| 170 | 113.333 | 182.392 | 50.175 |
| 180 | 120.000 | 193.121 | 53.645 |
| 200 | 133.333 | 214.579 | 59.605 |
| *Assumes efficiency = 150% (smash factor = 1.50). Formula: Swing Speed = Ball Speed ÷ (Efficiency/100). Conversions: 1 mph = 1.609344 km/h = 0.44704 m/s. | |||
What is Ball Speed to Swing Speed?
Ball speed to swing speed is a measure of impact efficiency, commonly expressed as the ratio of ball speed to swing speed (often called smash factor). It is used in sports like golf (ball speed ÷ clubhead speed) and baseball (exit velocity ÷ bat speed) to describe how effectively speed is transferred at impact. This value is often shown as a decimal (e.g., 1.50) or as a percentage (e.g., 150%), and values above 100% can be normal.
How to Calculate Ball Speed to Swing Speed?
The following steps outline how to calculate the ball speed, swing speed, or efficiency.
- First, determine the ball speed (BS).
- Next, determine the swing speed (SS).
- Next, determine the efficiency (E).
- Finally, calculate the missing variable using the formula BS = SS × (E/100).
- After inserting the values and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
Ball Speed (BS) = 150 mph
Swing Speed (SS) = 100 mph
Efficiency (E) = 150%
