WHIP Calculator
Enter walks, hits, and innings pitched using standard baseball notation to get WHIP (walks + hits per inning pitched) — and see where it falls versus elite, good, and roughly-average zones.
IP uses baseball notation: the digit after the decimal is outs, not tenths — .1 = 1 out (⅓ inning), .2 = 2 outs (⅔ inning). Enter 182.1 for “182 and a third” innings, not 182.33.
How you compare
Your WHIP vs. common performance zones
How WHIP works
WHIP measures how many baserunners a pitcher allows via the two most common routes — a walk or a hit — for every inning they throw. It's a rate stat, so it lets you compare a starter who threw 200 innings to a reliever who threw 60 on equal footing. Because innings pitched is tracked in thirds (3 outs per inning) rather than tenths, WHIP calculations have to convert that baseball-style notation into true decimal innings before dividing, or the rate comes out slightly wrong.
How it’s calculated
Innings pitched notation is first converted to outs (whole innings × 3, plus 1 for “.1” or 2 for “.2”), then back to true decimal innings (outs ÷ 3). WHIP = (Walks + Hits) ÷ true decimal innings pitched.
Educational estimate for any stat line you enter — not an official MLB or league statistics feed.
Worked example
A pitcher with 62 walks, 148 hits allowed, and 182.1 innings pitched (182 innings plus 1 out) has thrown 547 outs, or 182.33 true innings. WHIP = (62 + 148) ÷ 182.33 = 210 ÷ 182.33 = 1.15 — solidly in the “great” range, comfortably better than a roughly league-average workload.
Common mistakes
- Reading “.1” or “.2” as tenths of an inning and dividing by 182.1 or 182.2 directly — the true decimal values are 182.33 and 182.67.
- Forgetting that WHIP excludes hit-by-pitches and errors, so it understates total baserunners allowed compared to a stat that included every way of reaching base.
- Comparing a reliever's small-sample WHIP directly to a starter's full-season WHIP without noting the innings difference.
- Assuming a low WHIP guarantees a low ERA — stranding runners (via double plays, strikeouts) still matters separately.
Where it is used
- A quick, workload-independent read on how many runners a pitcher lets on base.
- Fantasy baseball roster and streaming decisions, alongside ERA and strikeout rate.
- Scouting and broadcast shorthand for command and hit prevention together.
Frequently asked questions
Why does innings pitched use .1 and .2 instead of decimals?
Baseball innings are made of 3 outs each, not 10ths, so "182.1" means 182 full innings plus 1 additional out (one third of an inning), and "182.2" means 182 innings plus 2 outs (two thirds). Reading .1 as "0.1 of an inning" or doing straight decimal math would understate the true innings total and skew every rate stat calculated from it, including WHIP and ERA.
What is considered a good WHIP?
As a common convention among analysts (not an official league scale): under 1.00 is elite, around 1.10 is great, roughly 1.30 is close to a league-average workload, and 1.50 or higher is considered poor. For context, MLB's league-average ERA was 4.15 in the 2025 season (Baseball-Reference) — WHIP and ERA move together since both track baserunners and runs allowed.
Does WHIP include hit-by-pitch or errors?
No — the standard WHIP formula only counts walks and hits allowed, divided by innings pitched. It excludes hit-by-pitches, batters reaching on an error, and baserunners who advance on a wild pitch or stolen base, even though all of those can put runners on base. That's why WHIP is described as "walks plus hits," not a full baserunners-allowed rate.
Why can a low-ERA pitcher still have a mediocre WHIP?
ERA only counts runs that actually score, while WHIP counts every walk and hit regardless of whether the runner comes around to score — so a pitcher who strands a lot of runners (via strikeouts, double plays, or luck) can post a strong ERA despite allowing plenty of baserunners. Over a long career the two stats tend to converge, but in any single season or stretch they can tell different stories.
How is WHIP different from batting average against?
Batting average against only counts hits divided by at-bats faced, ignoring walks entirely, while WHIP divides both walks and hits by innings pitched. A pitcher who avoids hits but walks a lot of batters can have a strong average-against but a mediocre WHIP, which is why scouts look at both control (walk rate) and hard contact (hits, average against) separately.