WHIP Calculator for Baseball
Enter the number of hits allowed, walks allowed, and innings pitched to calculate WHIP - the standard measure of how many baserunners a pitcher allows per inning. WHIP supports baseball notation for partial innings: 6.1 means six innings and one out (6.333 innings) and 6.2 means six innings and two outs (6.667 innings). Your result includes a quality rating, step-by-step calculation, and MLB benchmark comparisons.
Formula
Worked example
A pitcher allows 72 hits (H) and 20 walks (BB) over 92.0 innings pitched (IP). Step 1: Add the baserunners - 72 + 20 = 92. Step 2: Divide by innings - 92 / 92.0 = 1.000. A WHIP of exactly 1.000 is Excellent, just at the boundary of Elite and means the pitcher averages exactly one baserunner per inning.
What is WHIP in baseball?
WHIP stands for Walks plus Hits per Inning Pitched. It counts every baserunner a pitcher allows via a hit or a walk, divided by the number of innings they pitched. A pitcher who allows exactly one hit or walk per inning has a WHIP of 1.00. Because WHIP captures the two most common ways a pitcher puts runners on base, it is one of the most widely used pitching statistics in both MLB analysis and fantasy baseball. The stat was created by writer Daniel Okrent in 1979, the same year he invented rotisserie fantasy baseball. Unlike ERA, WHIP does not depend on whether those baserunners ultimately score, making it a cleaner measure of a pitcher's ability to keep the bases clear.
How to calculate WHIP - the formula
The WHIP formula is straightforward: WHIP = (Hits + Walks) / Innings Pitched. For example, a starter who allows 72 hits and 20 walks over 92 innings has WHIP = (72 + 20) / 92 = 92 / 92 = 1.000. One subtlety is innings-pitched notation: baseball records partial innings as .1 (one out, equal to 1/3 of an inning) and .2 (two outs, equal to 2/3 of an inning), not as true decimals. So 6.1 innings means 6 + 1/3 = 6.333... innings and must be converted before dividing. This calculator handles that conversion automatically. Hit-by-pitches and errors that allow a batter to reach base are excluded - only recorded hits and walks count.
WHIP vs. ERA - what each stat tells you
ERA (Earned Run Average) measures how many earned runs a pitcher gives up per nine innings. WHIP measures baserunner prevention regardless of scoring. The two stats tell complementary stories. A pitcher with a low WHIP and a low ERA is genuinely dominant. A pitcher with a low WHIP but a high ERA may be allowing home runs despite limiting singles and walks, suggesting they are getting unlucky with sequencing or are homer-prone. A pitcher with a high WHIP but a low ERA may be stranding lots of runners - a pattern that tends to reverse over time. Pairing WHIP with ERA and FIP (Fielding Independent Pitching) gives a much clearer picture of sustainable performance than any single number alone.
WHIP in fantasy baseball and scouting
In standard fantasy baseball leagues, WHIP is one of the five core pitching categories alongside ERA, wins, strikeouts, and saves. Because a single walk or hit can shift WHIP by a measurable amount in a smaller sample, streaming pitchers with favorable matchups often means targeting arms with WHIP below 1.20. In real-game scouting, WHIP is used as a quick filter to separate reliable starters from high-risk options. A WHIP below 1.10 over a full season is a strong indicator of rotation-quality performance. Relievers are often held to a stricter standard because they pitch in shorter stints, and anything above 1.40 for a closer is considered a flag in most front-office analyses.
WHIP quality tiers and MLB benchmarks
| WHIP Range | Rating | What it means |
|---|---|---|
| Below 1.00 | Elite | Cy Young-caliber, fewer than 1 baserunner per inning |
| 1.00 to 1.10 | Excellent | All-Star level, consistent run prevention |
| 1.10 to 1.25 | Great | Quality rotation starter or elite reliever |
| 1.25 to 1.35 | Above Average | Solid major-league pitcher, above the mean |
| 1.35 to 1.50 | Average | Around league average, holds a roster spot |
| Above 1.50 | Below Average | Struggles to limit baserunners, high run risk |
Standard performance tiers used by scouts and analysts. The MLB league average is typically around 1.30 to 1.35.
Frequently asked questions
What is a good WHIP in baseball?
A WHIP below 1.10 is considered excellent at the MLB level, and anything under 1.00 is elite or Cy Young-caliber. The league average for MLB starting pitchers typically sits between 1.30 and 1.35. For fantasy baseball purposes, targeting pitchers with a WHIP below 1.20 is a common strategy for the pitching-ratio categories.
Does WHIP include hit batters?
No. The standard WHIP formula counts only hits (H) and bases on balls (walks, BB). Hit batters (HBP) are not included, even though they also put a runner on base. Some advanced versions of WHIP-like metrics include hit batters, but the stat you see in box scores, Fangraphs, and Baseball Reference uses only hits and walks.
How do I enter partial innings in this calculator?
Use baseball notation: .1 means one out (one-third of an inning) and .2 means two outs (two-thirds of an inning). For example, type 7.1 for seven innings and one out, which equals 7.333 innings. Do not enter .3 or higher for the fractional part - that has no meaning in standard baseball notation. The calculator converts the notation automatically before computing WHIP.
What is the MLB all-time record for lowest career WHIP?
Addie Joss holds the all-time career WHIP record at 0.9678. Among modern pitchers (post-1920), Mariano Rivera holds the record at approximately 1.0003. For single-season performance, Pedro Martinez set the modern benchmark with a WHIP of 0.7373 in 2000, which remains one of the most dominant pitching seasons in baseball history.
Why does WHIP stay the same throughout a start if hits and walks increase proportionally?
WHIP is a rate stat, so if a pitcher allows hits and walks at a constant rate, the WHIP number does not change as innings accumulate - only the sample size grows. A pitcher who allows 1 hit or walk every inning will have a WHIP of 1.00 whether they pitch 5 innings or 50. This is why a small sample of innings produces a WHIP that can look very different from a pitcher's true talent level.
How is WHIP different from BAA (Batting Average Against)?
Batting Average Against measures only how often batters get hits off a pitcher, ignoring walks entirely. WHIP adds walks to the picture, making it a broader measure of baserunner prevention. A pitcher who rarely gives up hits but issues many walks can have an excellent BAA but a poor WHIP - this is why WHIP is generally considered the more complete pitching efficiency stat of the two.