Enter the total number of strikeouts and the total number of innings pitched into the calculator to determine the K/9 (Strikeouts Per Nine) rate; this calculator can also evaluate any of the variables given the others are known.

## K/9 (Strikeouts Per Nine) Formula

The following formula is used to calculate the K/9 (Strikeouts Per Nine) rate:

K/9 = (K * 9) / IP

Variables:

- K/9 is the Strikeouts Per Nine rate
- K is the total number of strikeouts
- IP is the total number of innings pitched

To calculate the K/9 rate, multiply the total number of strikeouts by 9, then divide the result by the total number of innings pitched.

## What is a K/9 (Strikeouts Per Nine)?

K/9, or Strikeouts Per Nine, is a statistic in baseball that measures the average number of strikeouts a pitcher records for every nine innings pitched. It is calculated by dividing the total number of strikeouts by the total number of innings pitched, then multiplying the result by nine. This metric is used to evaluate a pitcher’s effectiveness at preventing the opposing team from getting on base, as a strikeout is the only play in baseball where the defense can record an out without the ball being put into play. A higher K/9 rate generally indicates a more dominant pitcher, as they are able to retire batters without relying on their fielders. However, it’s also important to consider other factors, such as walks and home runs, when evaluating a pitcher’s overall performance.

## How to Calculate K/9 (Strikeouts Per Nine)?

The following steps outline how to calculate the K/9 (Strikeouts Per Nine).

- First, determine the total number of strikeouts (K).
- Next, determine the total number of innings pitched (IP).
- Next, divide the total number of strikeouts (K) by the total number of innings pitched (IP).
- Finally, calculate the K/9 (Strikeouts Per Nine).
- After inserting the variables 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.

Total number of strikeouts (K) = 150

Total number of innings pitched (IP) = 120