FIP (Fielding Independent Pitching) Calculator

Wondering how to calculate the true performance of a pitcher? Then you’ve come to the right place. ERA does not tell the whole story, so Fielding Independent Pitching (FIP) helps you see how good or bad a pitcher truly is — without counting help or mistakes from the defense.

We built the Fielding Independent Pitching Calculator to measure how well a pitcher performs based only on things they can control. A pitcher can control strikeouts, walks, home runs, and hit-by-pitches — not the defense or defensive luck.

In this guide we cover:

• What Is Fielding Independent Pitching (FIP)?
• What Is the Fielding Independent Pitching Calculator?
• The FIP formula
• Real-world examples
• What is a good FIP?

What Is Fielding Independent Pitching (FIP)?

Fielding Independent Pitching (FIP) is a statistic that measures a pitcher’s performance based solely on what the pitcher controls — not on fielding. It uses outcomes like:

• Strikeouts (K)
• Walks (BB)
• Hit by pitch (HBP)
• Home runs allowed (HR)

Remember: ERA (Earned Run Average) shows how many runs a pitcher allows — including the effects of the defense — while FIP shows how well the pitcher performed independent of defensive help or mistakes.

What Is the Fielding Independent Pitching Calculator?

An FIP calculator is an online tool designed to measure a pitcher’s true performance solely from outcomes they control. Enter the following fields to compute FIP:

• Innings Pitched (IP)
• Strikeouts (K)
• Walks (BB)
• Home Runs (HR)
• (Optional) Hit By Pitch (HBP)
• (Optional) League Constant (C) — usually around 3.10

This tool is great for analysts, coaches, or fans curious why one pitcher’s numbers are better than another’s.

Fielding Independent Pitching Formula

Are you curious how exactly Fielding Independent Pitching is calculated, and how strikeouts, walks, and home runs combine into a FIP? Let's see the formula:

$$$ \text{FIP}=\frac{(13\times HR)+(3\times (BB+HBP))-(2\times K)}{IP}+C$$$

Where:

• HR = Home runs allowed
• BB = Walks
• HBP = Hit by pitches
• K = Strikeouts
• IP = Innings pitched
• C = League constant (usually 3.10)

Now see a real world example that will use the formula to compute the values to get a FIP.

⚾ Real-World Fielding Independent Pitching Example

Suppose a pitcher has these stats:

• Innings Pitched (IP): 90
• Strikeouts (K): 80
• Walks (BB): 25
• Home Runs (HR): 12
• Hit by Pitch (HBP): 2
• League Constant (C): 3.10

Now apply the formula to compute FIP:

$$$ \text{FIP}=\frac{(13\times HR)+(3\times (BB+HBP))-(2\times K)}{IP}+C$$$

$$$ \text{FIP}=\frac{(13\times 12)+(3\times (25+2))-(2\times 80)}{90}+3.10$$$

$$$ \text{FIP}=\frac{156+81-160}{90}+3.10$$$

$$$ \text{FIP}=\frac{77}{90}+3.10$$$

$$$ \text{FIP}=0.86+3.10=3.96$$$

So, the pitcher’s FIP is 3.96, which is considered a solid league-average performance.

What Is a Good Fielding Independent Pitching (FIP)?

Curious to see a table that breaks down pitcher quality based on FIP values: