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Batting Average Calculator

Calculate BA, OBP, SLG, OPS, and advanced hitting metrics

Batting Avg

.267

OPS

.793

wOBA

.340

Batting Average

.267

MLB Avg: .248

OBP

.337

avg .320

SLG

.456

avg .414

OPS

.793

avg .734

ISO

.189

BABIP

.234

wOBA

.340

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Frequently Asked Questions

Q

How is batting average calculated?

Batting average (BA) equals hits divided by at-bats. A .300 batting average means getting a hit 30% of the time. Walks, hit-by-pitches, and sacrifice flies are not counted as at-bats, so they do not affect batting average. BA is the oldest and most recognized hitting statistic in baseball.

  • Formula: BA = Hits / At-Bats
  • .300+ = elite hitter (All-Star level)
  • .270-.299 = above average hitter
  • .250-.269 = league average (2023 MLB avg: .248)
  • .220-.249 = below average
  • Below .200 = Mendoza Line (struggling)
Batting AvgLevelHistorical PlayersHits per 500 AB
.350+Hall of Fame paceTy Cobb (.366 career)175+
.300-.349All-StarIchiro (.311), Pujols (.296)150-175
.270-.299Above averageSolid everyday starter135-150
.248MLB average (2023)League average hitter124
.220-.247Below averagePlatoon/defense-first110-124
Q

What is on-base percentage (OBP) and why does it matter?

On-base percentage measures how often a batter reaches base via hit, walk, or hit-by-pitch. OBP = (H + BB + HBP) / (AB + BB + HBP + SF). OBP is considered more valuable than batting average because getting on base in any way creates scoring opportunities. The 2023 MLB average OBP was .320.

  • Formula: OBP = (H + BB + HBP) / (AB + BB + HBP + SF)
  • .400+ = elite on-base ability (MVP-level)
  • .360-.399 = above average
  • .320 = MLB average (2023)
  • .300-.319 = below average
  • Below .300 = poor plate discipline
  • OBP correlates more strongly with runs scored than BA
OBPLevelBB RateNotable Example
.450+Historic18%+Ted Williams (.482 career)
.400-.449MVP caliber14-18%Mike Trout (.413)
.360-.399All-Star10-14%Strong top-of-order
.320-.359Average8-10%Typical starter
Below .320Below average<8%Free swinger
Q

How do you calculate slugging percentage and OPS?

Slugging percentage (SLG) equals total bases divided by at-bats. Total bases: singles count as 1, doubles as 2, triples as 3, home runs as 4. OPS is simply OBP + SLG. An OPS above .800 indicates an above-average hitter; above .900 is All-Star caliber.

  • SLG = Total Bases / At-Bats
  • Total Bases = 1B + (2B × 2) + (3B × 3) + (HR × 4)
  • OPS = OBP + SLG
  • .800+ OPS = above average
  • .900+ OPS = All-Star caliber
  • 1.000+ OPS = MVP contender
  • MLB 2023 average OPS: .734
OPSClassificationTypical ProductionPlayer Tier
1.000+Elite35+ HR, 100+ RBIMVP candidate
.900-.999All-Star25-35 HRTop-of-lineup
.800-.899Above average20-25 HREveryday starter
.734MLB average15-20 HRLeague average
.650-.733Below average10-15 HRPlatoon player
Below .650Poor<10 HRDefense-only value
Q

What is ISO (Isolated Power) in baseball?

Isolated Power (ISO) equals SLG minus BA, measuring raw extra-base power by removing singles from the equation. An ISO of .200+ indicates elite power. ISO isolates how often a hitter reaches extra bases, showing pure slugging ability independent of batting average.

  • Formula: ISO = SLG - BA
  • ISO only measures extra-base-hit frequency
  • .250+ = elite power (40+ HR pace)
  • .200-.249 = above average power (25-35 HR)
  • .150-.199 = average power (15-25 HR)
  • .100-.149 = below average power
  • Below .100 = slap hitter / no power
ISOPower LevelTypical HR/SeasonPlayer Type
.300+Historic50+Bonds, Stanton peak
.250-.299Elite35-50Heart of the order
.200-.249Above average25-35Power hitter
.150-.199Average15-25Balanced hitter
Below .150Low<15Contact-first
Q

What is wOBA and how does it compare to OPS?

Weighted on-base average (wOBA) assigns different values to each way of reaching base based on their actual run-scoring impact. Unlike OPS which simply adds OBP and SLG, wOBA properly weights events: a home run is worth roughly 2.9 times a walk, not 4 times. The MLB average wOBA is approximately .320.

  • wOBA uses linear weights: BB=0.69, HBP=0.72, 1B=0.88, 2B=1.24, 3B=1.56, HR=2.00
  • Scaled to look like OBP (MLB average ~.320)
  • More accurate than OPS because it properly weights events
  • .370+ = elite hitter
  • .340-.369 = above average
  • .320 = MLB average
  • Below .300 = below average
wOBAClassificationRuns CreatedComparable OPS
.400+EliteTop 5% in MLB~1.000+
.370-.399All-StarTop 15%~.900-.999
.340-.369Above averageTop 30%~.800-.899
.320-.339AverageMiddle 40%~.720-.799
Below .320Below averageBottom 30%~below .720

Example Calculations

1Full Season: Above Average Hitter

Inputs

At-Bats / Hits450 AB / 120 H
Hit Types74 1B, 25 2B, 3 3B, 18 HR
Discipline45 BB, 5 HBP, 4 SF

Result

Batting Average.267
OBP.337
SLG.467
OPS.793

BA = 120/450 = .267. Singles = 120-25-3-18 = 74. Total bases = 74 + 25*2 + 3*3 + 18*4 = 74+50+9+72 = 205. SLG = 205/450 = .456. OBP = (120+45+5)/(450+45+5+4) = 170/504 = .337. OPS = .337+.456 = .793.

2Power Hitter Profile

Inputs

At-Bats / Hits500 AB / 130 H
Hit Types60 1B, 30 2B, 2 3B, 38 HR
Discipline70 BB, 8 HBP, 5 SF

Result

Batting Average.260
OBP.357
SLG.536
OPS.913

BA = 130/500 = .260. Singles = 130-30-2-38 = 60. TB = 60 + 30*2 + 2*3 + 38*4 = 60+60+6+152 = 278. SLG = 278/500 = .556. OBP = (130+70+8)/(500+70+8+5) = 208/583 = .357. OPS = .357+.556 = .913. ISO = .556-.260 = .296.

3Contact Hitter Profile

Inputs

At-Bats / Hits550 AB / 170 H
Hit Types130 1B, 28 2B, 5 3B, 7 HR
Discipline35 BB, 3 HBP, 6 SF

Result

Batting Average.309
OBP.350
SLG.400
OPS.766

BA = 170/550 = .309. Singles = 170-28-5-7 = 130. TB = 130 + 28*2 + 5*3 + 7*4 = 130+56+15+28 = 229. SLG = 229/550 = .416. OBP = (170+35+3)/(550+35+3+6) = 208/594 = .350. OPS = .350+.416 = .766.

Formulas Used

Batting Average

BA = H / AB

The simplest hitting metric: proportion of at-bats that result in a hit.

Where:

BA= Batting average (e.g., .267 = 26.7% hit rate)
H= Total hits (singles + doubles + triples + home runs)
AB= At-bats (excludes walks, HBP, sacrifices)

On-Base Percentage

OBP = (H + BB + HBP) / (AB + BB + HBP + SF)

Measures the rate at which a batter reaches base through any non-error means.

Where:

OBP= On-base percentage
H= Hits
BB= Walks (bases on balls)
HBP= Hit by pitch
SF= Sacrifice flies

Slugging Percentage & OPS

SLG = (1B + 2×2B + 3×3B + 4×HR) / AB; OPS = OBP + SLG

Slugging measures extra-base power per at-bat. OPS combines on-base ability with power into a single metric.

Where:

SLG= Slugging percentage (total bases per at-bat)
1B/2B/3B/HR= Singles, doubles, triples, home runs
OPS= On-base Plus Slugging (OBP + SLG)

Understanding Baseball Hitting Statistics

Baseball has the richest statistical tradition of any sport, dating back to Henry Chadwick's invention of the box score in the 1850s. Batting average dominated for over a century as the primary hitting metric, but the sabermetric revolution proved that OBP, SLG, and weighted metrics like wOBA are far better predictors of a team's run-scoring ability.

The "triple slash" line (BA/OBP/SLG) provides a quick snapshot of a hitter's profile. A .280/.360/.480 line tells you the batter hits for average, gets on base well, and has solid power. OPS combines the latter two into a single number that correlates strongly with runs scored. Advanced metrics like wOBA and wRC+ refine this further by properly weighting each offensive event.

This calculator computes batting average, OBP, SLG, OPS, ISO (isolated power), BABIP, and wOBA from basic counting stats. Enter your at-bats, hits by type, walks, and HBP to see how your numbers compare against MLB league averages. The hit type breakdown shows your power profile at a glance.

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Last Updated: Mar 25, 2026

This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.

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