Baseball Hit-by-Pitch Rate Calculator
Instantly find a pitcher's hit-by-pitch rate per 9 innings (HBP/9) from their hit batters and innings pitched.
Input
HBP
IP
Enter innings pitched as a decimal. One out (1/3 inning) is about 0.33 and 2/3 inning is about 0.67.
Result
Hit-by-pitch rate (HBP/9, per 9 innings)
0.45
Hit by pitch
5 HBP
Innings pitched
100 IP
How it works
- Hit-by-pitch rate (HBP/9) shows how many batters a pitcher would hit if they pitched a full nine innings. A lower value means a smaller share of hit batters and steadier control.
- The formula is: HBP/9 = hit by pitch x 9 / innings pitched. For example, 5 hit batters over 100 innings gives 5 x 9 / 100 = 0.45.
- Enter innings pitched as a decimal. Treating one out (1/3 inning) as about 0.33 and 2/3 inning as about 0.67 keeps the result close to official stat lines.
- The rate is shown to two decimal places. Enter a season or multi-game total to review the average hit-by-pitch trend over that span.
- Along with the rate, the result lists the hit batters and innings pitched you entered, so you can check the numbers behind it at a glance.
- You can share the result straight to X, handy for talking pitching stats with teammates or fellow fans.
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Baseball Hit-by-Pitch Rate Calculator