# Batting Average Calculator

Calculate baseball batting average from hits and at-bats. Includes optional OBP calculation and historical comparison. Works for MLB, college, and little league stats.

## What this calculates

Batting average is the simplest and most recognizable statistic in baseball. It tells you what fraction of at-bats result in a hit. Just enter hits and at-bats, and optionally add walks and HBP to calculate on-base percentage too.

## Inputs

- **Hits** — min 0, max 5000 — Total base hits (singles + doubles + triples + home runs)
- **At-Bats** — min 1, max 10000 — Plate appearances minus walks, HBP, sacrifices, and catcher interference
- **Walks (BB)** — min 0, max 500 — Optional: enter to calculate On-Base Percentage (OBP)
- **Hit By Pitch (HBP)** — min 0, max 100 — Optional: enter to calculate OBP
- **Sacrifice Flies (SF)** — min 0, max 100 — Optional: enter to calculate OBP

## Outputs

- **Batting Average** — formatted as text — Hits / At-Bats, displayed in .XXX format
- **On-Base Percentage (OBP)** — formatted as text — Fraction of plate appearances reaching base safely
- **Hit Rate** — formatted as percentage — Percentage of at-bats resulting in a hit
- **Rating** — formatted as text — How this average compares historically

## Details

The batting average formula is: **AVG = Hits / At-Bats**

Batting average is displayed in three-decimal format (e.g., .300, pronounced "three hundred"). A player who gets 3 hits in 10 at-bats is batting .300, meaning they get a hit 30% of the time.

**Important: at-bats are not the same as plate appearances.** At-bats exclude walks, hit-by-pitches, sacrifices, and catcher interference. So if a player comes to the plate 600 times but walks 80 times, they have roughly 520 at-bats.

**Historical context:**
- **.400:** No one has hit .400 for a full season since Ted Williams hit .406 in 1941.
- **.350+:** Elite territory. Only a handful of players in any era sustain this.
- **.300:** Traditionally the benchmark for an excellent hitter. The phrase "300 hitter" is baseball shorthand for a very good batter.
- **.250:** Roughly league average in modern baseball.
- **.200:** The Mendoza Line, named after Mario Mendoza, is the informal threshold below which a player's batting is considered unacceptable.

**On-Base Percentage (OBP)** is considered a more complete measure of a hitter's ability to reach base. The formula is: OBP = (H + BB + HBP) / (AB + BB + HBP + SF). A .350 OBP is about average, and .400+ is excellent. Enter walks and HBP to calculate it.

While batting average remains the most well-known stat, modern analytics (sabermetrics) generally favor OBP, slugging percentage (SLG), and OPS (OBP + SLG) as more predictive measures of offensive value.

## Frequently Asked Questions

**Q: What is a good batting average?**

A: In modern MLB, a .300 batting average is considered excellent and typically places a player among the top 10-15 hitters in the league. The overall MLB batting average has been around .240-.250 in recent seasons. A .270 average is above average, and .320+ is elite. Context matters: in the deadball era (early 1900s) and steroid era (late 1990s), league averages were quite different from today.

**Q: What is the Mendoza Line?**

A: The Mendoza Line is an informal benchmark of .200 batting average, named after light-hitting shortstop Mario Mendoza who played in the late 1970s and early 1980s. Batting below .200 for an extended period is generally considered unacceptable, even for a defensive specialist. The term was popularized by George Brett and later became part of standard baseball vocabulary. In modern analytics, the concept is somewhat outdated since a player contributing walks and power can be valuable even with a low batting average.

**Q: Why is OBP considered better than batting average?**

A: OBP accounts for walks and hit-by-pitches, which batting average ignores. A player who bats .250 but walks 100 times a season reaches base far more often than a .290 hitter who rarely walks. Since the objective in baseball is to not make outs, OBP (which measures how often a batter avoids making an out) is a more complete picture of offensive contribution. The book Moneyball famously highlighted how OBP was undervalued relative to batting average.

**Q: Why are walks not included in at-bats?**

A: Walks are excluded from at-bats because the original intent of batting average was to measure a hitter's ability to get a hit when they put the ball in play (or try to). A walk is considered the pitcher's failure, not the batter's success in hitting. This is also why sacrifices and hit-by-pitches are excluded. It is a somewhat arbitrary distinction, which is one reason why OBP and other modern stats are gaining favor.

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Source: https://vastcalc.com/calculators/health/batting-average
Category: Health & Fitness
Last updated: 2026-04-08