WHIP Calculator - Walks Plus Hits Per Inning Pitched
The WHIP Calculator divides walks plus hits by innings pitched, with fields for full innings and partial outs. See baserunners, IP, and the working for each line.
All calculation runs in your browser. Nothing is transmitted or stored.
Results update as you type. Ctrl/Cmd+Enter copies the primary result.
Result
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Show the working
The WHIP Calculator computes walks plus hits per inning pitched, a rate stat that counts how many batters reach on a walk or a hit for each inning a pitcher records. Enter walks, hits, full innings, and extra outs from 0 to 2, or use decimal innings for a full season line. The WHIP Calculator shows baserunners, outs, IP, and the division step beside the final WHIP figure.
Calculate walks plus hits per inning pitched
Walks plus hits per inning pitched divides the sum of walks and hits by innings pitched. Unlike earned run average, WHIP does not split earned and unearned runs; every walk and every hit in the line adds one to the numerator. The WHIP Calculator sums those counts, converts outs to IP when needed, and reports WHIP to two decimal places.
The stat dates to late-twentieth-century sabermetric writing and now appears on broadcast graphics beside ERA. It answers a narrow question: how many baserunners did the pitcher allow on walks and hits per inning? Hit-by-pitch, errors, and fielder's choice stay out of the numerator so the figure stays comparable year to year on public stat feeds.
Fantasy and season-long rotisserie leagues sometimes cite WHIP as a category alongside ERA. A manager looking at a waiver claim can type last month's walk and hit totals with innings from the game log and see whether the rate moved or if one blowup skewed a small sample.
Apply the WHIP formula
The definition is a single ratio:
WHIP = (Walks + Hits) ÷ Innings pitchedInnings pitched from full innings and outs equals (full innings × 3 + partial outs) ÷ 3; for the full innings-and-outs explanation, see the ERA Calculator page, which uses the same outs fields.
Walks and hits must be non-negative integers in ordinary use. Innings pitched must be greater than zero. Decimal IP mode accepts season totals such as 200.0 innings with aggregate walk and hit counts from a stat table.
Calculate WHIP for 2 walks and 5 hits over 6⅔ innings
Inputs: 2 walks, 5 hits, 6 full innings, 2 outs.
- Baserunners: 2 + 5 = 7
- Outs: 6 × 3 + 2 = 20
- IP: 20 ÷ 3 = 6.667
- WHIP: 7 ÷ 6.667 = 1.05
Integer check: (7 × 3) ÷ 20 = 21 ÷ 20 = 1.05. That line is the primary engine fixture for innings-and-outs mode on this page.
Seven baserunners over six and two thirds innings is slightly above one baserunner per inning, a useful single-game sanity check before comparing to a season WHIP.
Calculate WHIP over a full season
For 50 walks, 150 hits, and 200.0 innings in decimal IP mode:
- Baserunners: 50 + 150 = 200
- WHIP: 200 ÷ 200 = 1.00
The WHIP Calculator shows the expression 200 ÷ 200 beside the 1.00 result. That season-style totals example is the second engine fixture and matches how qualified starter lines are quoted when IP is already decimal.
Season WHIP stabilizes with innings. A reliever who throws 40 innings can move from 0.85 to 1.10 on one bad outing; a 200-inning starter needs a long stretch of poor contact to move the rate by the same amount.
Know what counts toward WHIP
Walks, including intentional walks, count as one baserunner each. Hits of every type count: singles, doubles, triples, and home runs each add one to the numerator. The WHIP Calculator treats every walk and hit in the input fields as one counting event.
Reaching on catcher's interference is not a hit and not a walk in standard WHIP tables, so it stays out of the numerator. If a league publishes an adjusted rate that includes extra events, that is a different stat; this tool follows the walks-plus-hits definition.
Sacrifice bunts and sacrifice flies are not hits and do not count as walks, so they do not change WHIP when they advance a runner. A squeeze bunt that results in a fielder's choice might add a hit or walk to someone else's line but not to the pitcher's WHIP unless the scorer charges a hit or walk to the pitcher on that play.
Know what does not count toward WHIP
Hit-by-pitch does not add to WHIP even though it puts a runner on first. Errors and fielder's choice reachers are excluded because they are neither walks nor hits. Catcher's interference and batter interference calls also stay out unless a provider bundles them elsewhere.
Those excluded events can still affect ERA and runs scored. A pitcher may strand runners with a low ERA while WHIP stays elevated, or allow unearned runs after an error without changing WHIP. Enter walks and hits exactly as they appear on the pitching line you are checking.
A hit batsman who later scores on a homer does not increase WHIP for the hit-by-pitch itself, yet the run counts on the scoreboard. Separating WHIP from run prevention stats keeps the walk-and-hit rate readable without mixing in every way a runner reaches base.
Convert partial innings into decimals
Two outs after six innings is 6.667 IP, not 6.2 typed as a decimal. The separate outs field prevents the common mistake of treating broadcast notation as a decimal fraction of an inning. When only decimal IP is available from a season table, decimal mode skips the outs fields entirely.
The WHIP Calculator still displays IP in the breakdown so the divisor in WHIP matches the innings total you trust from the source.
Understand what a good WHIP is
WHIP, like ERA, shifts with run environment and league. The WHIP Calculator reports the rate from your inputs only and does not pull live league averages.
Illustrative MLB benchmarks, not tied to one season: around 1.00 often marks excellent baserunner prevention; near 1.30 has been close to league average for many qualified starters in recent years; marks above 1.40 frequently signal trouble when paired with average defense.
Relief samples swing more than rotation samples because the innings denominator is smaller.
Compare WHIP against ERA
WHIP tracks baserunners on walks and hits; ERA tracks earned runs scaled to innings per game. A pitcher can allow few hits yet give up hard contact with runners on base, or strand runners with a lower ERA and a higher WHIP. Home runs count once in WHIP but can cost multiple earned runs in one swing.
The two stats sit in the same sports calculator cluster. Use WHIP for reach frequency and ERA for earned run scoring rate. Neither stat captures defense, park factor, or bullpen inheritance by itself.
FAQ
What does WHIP stand for?
WHIP stands for walks plus hits per inning pitched. The WHIP Calculator applies that definition by summing walks and hits and dividing by innings pitched. The acronym appears on broadcasts and stat boards as a quick baserunner rate.
Are intentional walks included in WHIP?
Intentional walks count as walks in WHIP. The WHIP Calculator adds them to the numerator the same as any other walk. If a box score lists IBB separately, include those walks in the walk total you enter.
How is WHIP different from ERA?
WHIP counts walks and hits per inning pitched; ERA counts earned runs scaled to innings per game. WHIP ignores whether a runner scores; ERA tracks earned runs when they cross the plate. The two answers complement each other when read together.
Does a hit-by-pitch count in WHIP?
A hit-by-pitch does not count toward WHIP. The WHIP Calculator only sums walks and hits. Hit batters still matter for game state and can affect ERA when they score, but they are outside the classic WHIP definition.
Can WHIP use decimal innings for a season line?
Decimal IP mode accepts season totals such as 200.0 innings with 50 walks and 150 hits for a 1.00 WHIP line. The WHIP Calculator skips outs conversion in that mode and divides total baserunners by the IP you enter.
How do partial innings affect WHIP?
Partial innings are entered as outs from 0 to 2 with full innings in a separate field. The WHIP Calculator converts to IP before dividing. For a full walkthrough of outs versus decimal typing, use the ERA Calculator page, which owns the detailed conversion explanation.
What is a good WHIP for a starter?
A good WHIP depends on league and year. Illustratively, many MLB starters near 1.30 have been average, while marks at 1.00 or below often indicate strong baserunner control. The WHIP Calculator outputs the rate from your numbers; compare to context stats separately.
Do errors affect WHIP?
Errors do not enter WHIP because they are neither walks nor hits. The WHIP Calculator will not change when an error extends an inning unless that error leads to extra walks or hits in the line you type. Unearned runs can still change ERA on the earned run side.
Why show an integer outs form for WHIP?
The expression (baserunners × 3) ÷ outs keeps the division in whole numbers until rounding. The WHIP Calculator shows that form alongside decimal IP for innings-and-outs entries. It matches the engine fixture used to verify 1.05 for seven baserunners over 20 outs.
Can WHIP be zero?
WHIP is zero only when walks and hits are both zero over positive innings, a shutout line with no baserunners allowed on walks or hits. Hit-by-pitch and errors could still occur without changing WHIP. Such lines are rare over more than a few innings.
Closing summary
The WHIP Calculator sums walks and hits, converts innings and outs to IP when needed, and divides to produce WHIP with visible working. It clarifies what counts in the numerator, what is excluded, and how the stat relates to ERA without repeating the full earned-run discussion.
Season totals belong in decimal IP mode; single-game lines can use full innings and outs for the same conversion rules linked from the ERA page.