Batting Average Is Hits Divided by At-Bats

Batting average is the simplest offensive statistic in baseball. You calculate it by dividing the number of hits a player has by the number of at-bats they have taken. The result is expressed as a three-digit decimal — for example, .287 or .312 — and it tells you roughly how often a batter gets a hit when they step up to the plate.

The formula is straightforward: Hits ÷ At-Bats = Batting Average. If a player has 150 hits in 500 at-bats, the math is 150 ÷ 500 = 0.300, which is written as .300. A .300 average is considered excellent in modern baseball; a .250 average is below average.

Key Takeaways

  • Batting average equals hits divided by at-bats, expressed as a decimal to three places.
  • An at-bat counts every time a batter faces a pitch and either gets a hit, makes an out, or hits into a fielder's choice — but not walks, hit-by-pitches, or sacrifice flies.
  • A .300 average or higher is considered very good; .250 or lower is considered poor.
  • Batting average does not account for walks, power, or how far a ball travels, so it is most useful when combined with other statistics like on-base percentage and slugging percentage.

What Counts as a Hit and What Does Not

A hit is any batted ball that allows the batter to reach base safely without an error by a fielder. A single, double, triple, or home run all count as one hit each. The type of hit does not matter — a bunt single counts the same as a line drive to the gap.

Walks, hit-by-pitches, and reaching base on an error do not count as hits. Neither do sacrifice bunts or sacrifice flies, even though the batter reaches base or advances a runner. These are intentional outs made to help the team, and they are excluded from the batting average calculation to avoid penalizing a batter for a strategic play.

What Counts as an At-Bat

An at-bat is recorded every time a batter completes a plate appearance by either getting a hit, making an out, or hitting into a fielder's choice. This includes strikeouts, groundouts, fly outs, and any other out recorded against the batter.

Walks and hit-by-pitches do not count as at-bats, even though they are plate appearances. Sacrifice bunts and sacrifice flies also do not count as at-bats. This is why a player can have more plate appearances than at-bats — the difference is made up by walks, hit-by-pitches, and sacrifices.

A Step-by-Step Example

Suppose a player finishes the season with the following record: 165 hits, 8 walks, 2 hit-by-pitches, 1 sacrifice fly, and 520 at-bats. To calculate batting average, you use only the hits and at-bats.

The calculation is 165 ÷ 520 = 0.3173, which rounds to .317. The walks, hit-by-pitches, and sacrifice fly are ignored for batting average purposes. If you wanted to know how often this player reached base (which is a different statistic called on-base percentage), you would include the walks and hit-by-pitch, but batting average is hits only.

Why Batting Average Alone Does Not Tell the Whole Story

Batting average treats all hits the same. A single and a home run both count as one hit, even though a home run is far more valuable. A player who hits .280 with 40 home runs is a much stronger offensive contributor than a player who hits .280 with 5 home runs, but their batting averages are identical.

For this reason, serious baseball analysis combines batting average with slugging percentage (which weights hits by how many bases they earn) and on-base percentage (which includes walks and hit-by-pitches). Together, these three statistics give a much clearer picture of a batter's offensive value than batting average alone.

How Batting Average Changes Over a Season

Batting average is updated after every game and changes as a player accumulates more hits and at-bats. Early in the season, a few hits or outs can swing the average significantly. A player who goes 2-for-3 in their first game has a .667 average, but that will drop as they play more games and the sample size grows.

By the end of a full season, a player's average stabilizes because the number of at-bats is large enough that a single game has minimal impact. This is why batting averages are most meaningful when comparing players over a full season or career, rather than over a few games.

Frequently Asked Questions

Does a walk count toward batting average?

No. A walk is a plate appearance but not an at-bat, so it does not affect batting average. The batter reaches base, but the hit and at-bat columns both stay the same. This is why a player can have a high batting average and still be a strong offensive player if they draw many walks.

What if a batter reaches base on an error?

Reaching base on an error does not count as a hit or an at-bat. The at-bat is recorded as an out (usually a strikeout or groundout), but since the batter reached base safely due to the fielder's mistake, it is not charged as a hit. The batter's batting average goes down because the at-bat is counted but the hit is not.

Is .300 always considered a good batting average?

In modern baseball, yes — .300 is the traditional benchmark for a strong hitter. However, league averages change over time. In the 1920s and 1930s, league averages were higher, so .300 was less exceptional. Today, the overall batting average across Major League Baseball is typically between .250 and .270, making .300 a mark of excellence.

How do you calculate batting average for a partial season?

The formula is the same: hits divided by at-bats. You can calculate batting average for any stretch of games — a week, a month, or a season — by using the hit and at-bat totals for just that period. A player might have a .350 average in April but a .280 average overall if they struggle later in the season.