Hits per Nine Innings, or H/9, is a traditional pitching metric that estimates how many hits a pitcher would allow over a full nine-inning game.
Because it removes the noise of partial outings, H/9 lets you compare starters and relievers on the same scale and spot trends in contact management.
Use the simple tool below to plug in a pitcher’s hits allowed and innings pitched and get an instant, precision-formatted result.
In addition to H/9, evaluating a pitcher’s performance often involves analyzing their ability to limit walks, making a bb/9 calculation tool an essential asset for any baseball statistician.
By combining these metrics, fans and analysts can gain a comprehensive view of a pitcher’s effectiveness on the mound.
Understanding both hits and walks allowed provides deeper insight into a pitcher’s overall command and control.
Hits per Nine Innings FAQ
What is considered a good H/9?
League averages shift each season, but anything under 8.0 is typically viewed as above average, with numbers below 7.0 marking elite contact suppression.
Why use H/9 instead of ERA?
ERA factors runs, which depend on defense and sequencing.
H/9 isolates how often a pitcher allows base hits, giving a cleaner view of pure contact allowed.
Does H/9 include home runs?
Yes.
A home run is scored as a hit, so it is fully counted in the hits total used for the calculation.
How do partial innings affect the calculation?
Use the decimal form of innings pitched, where one out equals 0.1 and two outs equal 0.2.
The calculator handles the math from there.
Can H/9 predict future performance?
It offers a snapshot of contact rates, but strikeouts, walks and batted ball data also matter.
Combine H/9 with other stats for a fuller forecast.