Batting average measures how often a baseball or softball hitter gets a hit per official at-bat. The formula is hits divided by at-bats (H ÷ AB), expressed as a three-digit decimal without the leading zero, so 150 hits in 500 at-bats is written and spoken as “.300.”

How the calculation actually works

Enter total hits and total at-bats, and the calculator divides one by the other, rounding to three decimal places to match how the stat is reported in every official box score. If you’re tracking a season in progress rather than a finished one, you can re-run the numbers after every game, which is exactly how a real-time in-season average is maintained on scoreboards and stat sheets.

Worked example: a player goes 3-for-4 in a game (3 hits in 4 at-bats). If they entered that game with 87 hits in 290 at-bats, their new season totals become 90 hits in 294 at-bats. 90 ÷ 294 = .306, up from .300 before the game. That’s the exact math this calculator runs automatically.

At-bats versus plate appearances: the distinction that trips people up

A plate appearance is any completed turn at the plate, full stop. An at-bat is a narrower category that excludes walks, hit-by-pitches, sacrifice bunts, and sacrifice flies, because those outcomes aren’t considered a fair test of a hitter’s ability to get a hit. This means a player who walks four times in a game with zero hits sees no change to their batting average that day, since none of those four plate appearances were at-bats. It’s a frequent source of confusion for people newer to the sport, since intuitively “getting on base four times” feels like it should count for something in this particular stat (it does, just not this one; that’s what on-base percentage measures instead).

What the numbers actually mean

In modern Major League Baseball, a batting average around .250 is roughly league average for a regular starter. .300 or higher across a full season is considered excellent and typically puts a player in All-Star or batting title conversations; in the 2025 MLB season, Aaron Judge led the majors with a .331 average, and Trea Turner led the National League at .304, giving a real sense of what an elite full-season mark looks like in the current game. Averages that drop under .200, sometimes informally called the “Mendoza Line,” usually signal a hitter whose roster spot is in jeopardy regardless of their defense.

Where this calculator gets used

Youth and high school coaches tracking stats by hand during a season, fantasy baseball players comparing hitters mid-year, scorekeepers double-checking a scorebook total against the official one, and fans settling debates about who’s actually performing better right now all use a batting average calculator the same basic way: entering hits and at-bats and getting an instant, correctly rounded number instead of doing long division by hand.

FAQ

Does a walk count as an at-bat?
No. Walks are excluded from at-bats entirely, which is why they don’t affect batting average at all, positively or negatively.

What’s considered a good batting average?
Roughly .250 is average for a Major League regular, .300+ is very good, and .350+ across a full season is rare even among elite hitters.

Why is batting average written as .300 instead of 0.300 or 30%?
It’s a long-standing baseball convention, not a mathematical rule. The stat has been reported this way since the 1800s, and the format stuck.

Does a sacrifice bunt lower your batting average?
No, because a sacrifice bunt isn’t counted as an at-bat, the same way a walk isn’t. It doesn’t help your average either; it’s simply excluded from the calculation.