FIP (Fielding Independent Pitching) Calculator
Calculate Fielding Independent Pitching (FIP) for baseball pitchers using home runs, walks, hit by pitch, and strikeouts. Free baseball calculator with charts.
About This Calculator
FIP (Fielding Independent Pitching) is a sabermetric statistic that measures a pitcher's effectiveness based solely on outcomes they directly control: home runs, walks, hit by pitch, and strikeouts. Unlike ERA, FIP removes the influence of defense, ballpark factors, and luck on balls in play, providing a clearer picture of a pitcher's true skill level. This FIP calculator is essential for baseball analysts, coaches, fantasy baseball players, and fans who want to evaluate pitcher performance beyond traditional stats.
The FIP formula works by weighting each controlled event by its typical run value: home runs (weight 13), walks and hit by pitch (weight 3), and strikeouts (weight −2). The sum is divided by innings pitched and added to a league-specific constant (typically 3.1–3.2) to scale FIP to the same range as ERA. A lower FIP indicates better performance, with elite MLB pitchers often posting values under 3.00. The component breakdown shows how each factor contributes to the final FIP value.
Regional Notes: FIP is primarily used in MLB and professional baseball worldwide (Japan's NPB, Korea's KBO, and Latin American leagues all use sabermetrics). In college baseball (NCAA), FIP is increasingly adopted for scouting and player evaluation. The formula is universal, but the constant varies by league and season. For MLB, historical constants range from 3.00 in high-offense eras to 3.30 in pitcher-friendly years. Use the constant field to match your specific league.
Frequently Asked Questions
What is FIP in baseball?
FIP (Fielding Independent Pitching) is a sabermetric that evaluates a pitcher based solely on events they control — home runs, walks, hit by pitch, and strikeouts — removing defense and luck from the equation. It is scaled to look like ERA for easy comparison.
How is FIP calculated?
FIP is calculated using the formula: FIP = ((13 × HR) + (3 × (BB + HBP)) − (2 × K)) / IP + constant. The constant (typically around 3.1–3.2) scales FIP to match league average ERA.
What is a good FIP in baseball?
In MLB, a FIP around 3.00 is excellent, 3.50 is above average, 4.00 is average, 4.50 is below average, and anything above 5.00 is poor. An elite pitcher like Jacob deGrom often posts FIPs under 2.50.
What is the difference between FIP and ERA?
ERA (Earned Run Average) measures runs allowed per 9 innings, including the impact of defense and ball-in-play luck. FIP isolates only strikeouts, walks, hit by pitch, and home runs — factors a pitcher directly controls. FIP better predicts future ERA than past ERA.
How is FIP different from xFIP?
xFIP (Expected FIP) replaces a pitcher's actual home run rate with the league-average home run rate on fly balls, removing home run luck. FIP uses the actual home runs allowed. xFIP is considered even more predictive of future performance.
What FIP constant should I use?
The default FIP constant of 3.214 is the 2019 MLB league average. For historical context, constants range from about 3.00 to 3.30 depending on the era's run scoring environment. You can find yearly constants on FanGraphs.
Can FIP be used for college or high school baseball?
Yes, FIP works at any level of baseball. Use the same formula and adjust the constant based on the league's average ERA. For college baseball, a typical constant might be 3.5–4.0 depending on the conference and offensive environment.
Is a lower FIP better?
Yes, a lower FIP is better. Since FIP is scaled to ERA, lower values indicate the pitcher allowed fewer home runs and walks while generating more strikeouts per inning. Sub-3.00 FIP is considered elite in MLB.