Quick answer
Batting average = hits ÷ at-bats. 150 hits in 500 at-bats gives .300, a hit in 30% of at-bats.
Enter hits and at-bats. The calculator returns the average and hits per at-bat.
Related tools: Batting Strike Rate Calculator: Cricket batting strike rate. Winning Percentage Calculator: Winning percentage from wins, losses and ties. Golf Handicap Calculator: World Handicap System index from your recent scores.
How to use the Batting Average Calculator
- Enter hits (a whole number, 0 or more).
- Enter at-bats (a whole number, 1 or more).
- Press Calculate to see the result, and use Reset to start again.
| Input | What to enter | Allowed values |
|---|---|---|
| Hits | A whole number | ≥ 0 |
| At-bats | A whole number | ≥ 1 |
Formula and method
Formula
AVG = hits ÷ at-bats
IEEE-754 double precision; shown to the decimals indicated.
Shown to three decimals as in baseball scoring. Informational estimate, not medical advice. Talk to a qualified health professional about your own situation.
Worked examples
These examples are verified: each one is an automated test case that the live calculator must reproduce exactly.
Example 1
Inputs: Hits = 150; At-bats = 500.
| Result | Value |
|---|---|
| Batting average | 0.3 |
| Hits per at-bat | 30% |
Example 2
Inputs: Hits = 87; At-bats = 312.
| Result | Value |
|---|---|
| Batting average | 0.279 |
| Hits per at-bat | 27.9% |
Example 3
Inputs: Hits = 0; At-bats = 40.
| Result | Value |
|---|---|
| Batting average | 0 |
| Hits per at-bat | 0% |
The first line is the headline result (batting average). Below it the batting Average Calculator lists hits per at-bat, which describe the same case from other angles. IEEE-754 double precision; shown to the decimals indicated.
Reading .300
A .300 average is a traditional mark of an excellent hitter; the league average in modern MLB is around .245 to .255. Averages are written to three decimals without a leading zero.
What it ignores
Batting average ignores walks and extra-base power. On-base percentage and slugging percentage give a fuller picture. Hits cannot exceed at-bats.
How the result changes with hits
Holding every other input at the first worked example, this table changes only hits. It shows how sensitive the answer is to that one value; each row was produced by running this calculator.
| Hits | Batting average | Hits per at-bat |
|---|---|---|
| 75 | 0.15 | 15% |
| 150 | 0.3 | 30% |
| 300 | 0.6 | 60% |
What happens with invalid input
These messages are produced by the calculator itself, so you know what to fix.
- Hits: entering "5" shows "Hits cannot exceed at-bats." beside that field and no result.
- At-bats: entering "0" shows "At-bats must be at least 1." beside that field and no result.
Choosing between the Batting Average Calculator and similar calculators
Each row shows what a related calculator on this site asks for and what it returns, so you can pick the one that matches your question.
| Calculator | You enter | It returns |
|---|---|---|
| [Batting Strike Rate Calculator](/fitness/batting-strike-rate/) | runs scored and balls faced | Strike rate |
| [Winning Percentage Calculator](/fitness/winning-percentage/) | wins, losses and ties count as | Winning percentage |
| [Golf Handicap Calculator](/fitness/golf-handicap-calculator/) | adjusted gross scores, course rating for each score and slope rating for each score | Handicap Index |
| [Basketball Shooting Percentage Calculator](/fitness/basketball-shooting-percentage-calculator/) | field goals made and field goals attempted | Field goal % |
| [Football Goal Difference Calculator](/fitness/football-goal-difference-calculator/) | goals for and goals against | Goal difference |
Background: fitness estimates
Fitness formulas are estimates whose accuracy depends on the input. One-rep-max formulas such as Epley and Brzycki give different answers, and predictions from hard sets of a few repetitions are better than from sets of ten or more. Age-based maximum heart rate formulas can be off by 10 to 30 beats a minute for an individual; Tanaka's 208 − 0.7 × age is generally preferred to 220 − age but is still an estimate.
Pace models built from a race result assume a maximal effort and work best for distances from about 5 km to the marathon. Use the output as a guide, not a prescription.
Assumptions and limitations
- Hits cannot exceed at-bats
- Not a diagnosis
Estimates from formulas describe averages. They are not a training or medical prescription; check with a qualified professional before changing your exercise or diet.
If a required value is empty, not a number, or outside its allowed range, the form marks that field with a message and shows no result instead of a misleading number. The automated checks deliberately try invalid entries for hits and at-bats to confirm this.
Frequently asked questions
What counts as an at-bat?
A plate appearance excluding walks, hit by pitch and sacrifices.
What is the best season average?
Hugh Duffy's .440 in 1894 under older rules; Ted Williams hit .406 in 1941.
How do I compute needed hits?
Target average × at-bats.
What does the Batting Average Calculator calculate?
Baseball batting average from hits and at-bats. It returns Batting average and Hits per at-bat.
What formula does the Batting Average Calculator use?
AVG = hits ÷ at-bats. Shown to three decimals as in baseball scoring.
What do I need to enter in the batting Average Calculator?
You enter Hits and At-bats.
How is the result rounded or limited?
IEEE-754 double precision; shown to the decimals indicated. Hits cannot exceed at-bats.
What are the limits of this calculator?
Hits cannot exceed at-bats. Not a diagnosis.
What is an example of a batting Average result?
With hits 150 and at-bats 500, the batting average is 0.3.
Where does the method come from?
The method follows: Official Baseball Rules, 9.02(a).
Can I rely on this calculator for a decision?
Estimates from formulas describe averages. They are not a training or medical prescription; check with a qualified professional before changing your exercise or diet. For this calculator in particular: Hits cannot exceed at-bats.
Related calculators
- Batting Strike Rate Calculator — Cricket batting strike rate.
- Winning Percentage Calculator — Winning percentage from wins, losses and ties.
- Golf Handicap Calculator — World Handicap System index from your recent scores.
- Basketball Shooting Percentage Calculator — Field-goal, effective field-goal and three-point percentages.
- Football Goal Difference Calculator — Goals scored minus goals conceded.
- On-Base Percentage Calculator — Baseball on-base percentage.
Sources
- Official Baseball Rules, 9.02(a)
Content last reviewed 2026-11-04. Formulas and worked examples are checked by automated tests against independently computed values.