FIP Calculator (Fielding Independent Pitching)

Find a pitcher's FIP, which strips out fielding luck.

Home runs allowed

Walks

Hit by pitch

Strikeouts

Innings pitched

FIP constant

FIP 3.444

Formula: FIP = (13·HR + 3·(BB+HBP) − 2·K) ÷ IP + constant

Step-by-step with your numbers:

1. Values used:

2. Home runs allowed = 18

3. Walks = 50

4. Hit by pitch = 6

5. Strikeouts = 170

6. Innings pitched = 180

7. FIP constant = 3.1

9. FIP = 3.444

Did we solve your problem today?

FIP estimates a pitcher's effectiveness using only outcomes they control: strikeouts, walks, hit batters and home runs.

The math behind it

FIP = (13·HR + 3·(BB+HBP) − 2·K) ÷ IP + a constant (~3.1) that scales it to look like ERA.

18 HR, 50 BB, 6 HBP, 170 K over 180 IP → about 3.34.

FIP vs ERA?

FIP removes the influence of defense and luck, so it's a better predictor of future ERA.