WHIP Calculator

WHIP stands for walks plus hits per inning pitched. It counts how many batters reach base by a walk or a hit, then divides by innings pitched. Unlike ERA, WHIP does not care whether those runners scored — only that they reached base.

A lower WHIP means fewer free baserunners. Elite major-league starters often sit near or below 1.00–1.10; numbers above about 1.40 usually point to traffic on the bases. Context still matters: league, park and role all shift what “good” looks like.

Because innings are recorded in thirds, this calculator converts innings to outs first: WHIP = (walks + hits) × 3 ÷ outs. That keeps partial innings exact — 6.1 is nineteen outs, not 6.1 decimal innings.

Innings pitched use baseball notation: .1 means one out in the inning and .2 means two outs. There is no .3 — the third out completes the inning.

1. Add walks and hits allowed to get total baserunners from those two outcomes.
2. Convert innings pitched to outs. Multiply full innings by 3 and add the digit after the dot: 48.2 is 146 outs.
3. Multiply baserunners by 3, then divide by outs.
4. Round to two decimal places for the displayed WHIP.

Worked example

A pitcher with 20 walks and 40 hits in 48.2 innings has 60 baserunners and 146 outs. WHIP = 60 × 3 ÷ 146 ≈ 1.23. Treating 48.2 as a regular decimal would be slightly wrong — baseball notation is outs, not tenths.

ERA counts earned runs that scored. WHIP counts walks and hits that put runners on base, whether or not they came around. A pitcher can post a low ERA with a high WHIP by stranding runners, or the reverse when sequencing goes poorly. Looking at both paints a fuller picture than either alone.