WHIP in Baseball

Enter walks, hits allowed, and innings pitched below. The calculator handles fractional innings automatically: ".1" means one-third of an inning (one out recorded), ".2" means two-thirds (two outs recorded).

WHIP = (Walks + Hits Allowed) / Innings Pitched. That single line is the entire formula. MLB's official glossary(opens in new tab) defines WHIP as the sum of a pitcher's walks and hits divided by total innings pitched.

Step-by-Step Example

A college pitcher has allowed 38 hits and 14 walks over 45.2 innings pitched this season. First, convert the fractional innings: 45.2 in baseball notation equals 45 and 2/3 innings (45.667 as a decimal).

• Walks + Hits = 14 + 38 = 52 baserunners
• Innings Pitched = 45.667
• WHIP = 52 / 45.667 = 1.14

That 1.14 WHIP means the pitcher allows slightly more than one baserunner per inning. At the MLB level, FanGraphs rates this in the great-to-above-average range(opens in new tab).

What Counts as a "Hit" in WHIP?

Singles, doubles, triples, and home runs all count. Hit batters do not count toward WHIP (they count toward a separate stat). Errors do not count either: if a batter reaches base on a fielding error, that baserunner is excluded from the WHIP calculation. Only hits (H) and walks (BB) go into the numerator.

Fractional Innings

Baseball records partial innings using a decimal that does not follow standard math. The decimal represents outs recorded in an incomplete inning:

The calculator above converts these automatically when you enter innings in baseball notation.

A good WHIP in baseball depends on the level of play, but the general benchmark is this: anything below 1.20 at the MLB level is above average, and below 1.00 is excellent. According to FanGraphs(opens in new tab), league-average WHIP typically falls between 1.25 and 1.35, depending on the season.

WHIP Rating Scale

Adapted from FanGraphs' WHIP benchmarks(opens in new tab). FanGraphs provides single-point estimates; the ranges below show where each tier begins and ends:

Relief pitchers often post lower WHIPs than starters because they face fewer batters per outing and can pitch at maximum effort for shorter stretches.

Common WHIP Questions

• Is a 1.20 WHIP good? Yes. A 1.20 WHIP sits right at the border between above average and average for an MLB pitcher. For a high school or college pitcher, 1.20 is quite strong.
• Is 1.15 WHIP good? Above average. At the MLB level, a 1.15 WHIP puts a pitcher among the better starters in the league. At lower levels with wider talent gaps, 1.15 is excellent.
• What is a bad WHIP in baseball? Anything above 1.40 is considered poor at the MLB level. A WHIP of 1.50 or higher means the pitcher is putting nearly 10 baserunners on over a 7-inning stretch, which leads to high-scoring games.
• What is WHIP in softball? The formula is identical. Softball just uses 7-inning games instead of 9. A good WHIP in college softball is similar to baseball: below 1.20 is strong, below 1.00 is dominant.

WHIP by Level of Play

Youth pitchers naturally post higher WHIPs because command develops later than velocity. A 12U pitcher with a 1.30 WHIP has strong control for that age group.

The all-time career WHIP record belongs to Addie Joss, who pitched for the Cleveland Naps from 1902 to 1910 and finished with a career WHIP of 0.9678. Only a handful of pitchers in MLB history have maintained a career WHIP below 1.00.

All-Time Career WHIP Leaders

Source: Baseball-Reference career WHIP leaders(opens in new tab). Active players' numbers continue to change.

Notable Single-Season Records

Pedro Martinez's 2000 season with the Red Sox stands as the modern-era benchmark: a 0.7373 WHIP over 217 innings. That translates to fewer than 3 baserunners allowed per 4 innings pitched across an entire season. Among active pitchers, deGrom's 2018 season (0.9120 WHIP, 217 IP) is one of the most dominant recent performances.

For context on how these numbers compare to other pitching stats, our ERA calculator breaks down earned run average with the same step-by-step approach.

ERA and WHIP measure different things, and the gap between them tells a story. ERA counts runs allowed per game. WHIP counts baserunners allowed per inning. A pitcher can have a low WHIP but a high ERA, or the reverse, and each combination points to a different issue.

What the Combinations Reveal

The high WHIP, low ERA pattern is the most important one to watch for coaches. A pitcher stranding lots of runners often looks fine in the box score, but the underlying performance suggests regression. Track both stats game by game to spot these trends early. Striveon's performance testing lets you log pitching stats alongside velocity and command data after each outing, so you can connect the numbers to what you see on the mound.

When to Use Each Stat

• Scouting a pitcher for a tryout or roster spot: WHIP is more predictive. It measures what the pitcher controls (preventing hits and walks) rather than what happens after runners reach base, which involves defense and sequencing luck.
• Evaluating a full season: Use both. ERA tells you the outcome (runs), WHIP tells you the process (baserunners). Large gaps between the two over a full season usually correct themselves.
• Comparing across leagues: WHIP is easier to compare because it does not depend on innings per game. ERA changes based on whether the league plays 6, 7, or 9 innings (our ERA calculator covers this in detail).

WHIP and ERA are starting points, not endpoints. They summarize what happened on game day but miss the underlying mechanics. Velocity trends over the course of a game, first-pitch strike percentage, pitch-type effectiveness against different handedness, and command consistency all feed into those final numbers. A structured athlete development system connects these data points into a single pitcher profile that tracks progress over months, not just games.

For coaches tracking pitchers across a season, pairing game stats with practice observations reveals patterns that box scores hide. If a starter's WHIP spikes in innings 5 through 7, that points to conditioning. If their WHIP is fine against right-handed batters but doubles against lefties, that is a pitch repertoire issue. Track per-outing pitcher evaluations and connect them to game-day stats with Striveon.

For hitting-side stats that complement pitcher evaluation, our OPS guide and calculator breaks down on-base percentage and slugging into one number. And if you track game scoring, our baseball scorecard guide covers notation and stat tracking fundamentals, while the batting average calculator handles the most basic hitting metric.