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On Base Percentage Calculator


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On base percentage calculator helps you figure out how often a baseball player successfully gets on base. It considers hits, walks, and hits by pitch compared to their total times at bat, which quickly shows you how well a batter can contribute to the team in scoring.

What is OBP - on-base percentage?

On-base percentage (OBP) is a baseball statistic that measures the percentage of plate appearances in which a player successfully reaches base through hits, walks, or hit-by-pitches.

On base percentage is sometimes represented as on base average because it's often shown as a percentage.

If a player has a higher OBP, it means he is good at getting on base and staying in the game longer which helps in making the whole team more effective in offense.

How to calculate on-base percentage?

Understanding a player's on-base percentage is key to assessing their batting skills in baseball. You can easily calculate the on base percentage by using the formula below, such as:

On base percentage formula:

$$ OBP = \frac{H + W + HBP}{AB + W + HBP + SF} $$


  • OBP – On-Base Percentage
  • H – Hits
  • W – Walks
  • HBP – Hit By Pitch
  • AB – At Bats
  • SF – Sacrifice Flies


Suppose a baseball player has the following statistics:

  • Hits (H): 50
  • Walks (W): 30
  • Hit By Pitch (HBP): 5
  • At Bats (AB): 200
  • Sacrifice Flies (SF): 3

Use these values to calculate the on-base percentage by using the OBP formula :

\(OBP = \frac{H + W + HBP}{AB + W + HBP + SF}\)

Now, put all the values into the equation:

\(OBP = \frac{50 + 30 + 5}{200 + 30 + 5 + 3}\)

Next, add up all the numerator and denominator:

\(OBP = \frac{238}{85}\)

Finally, divide this to get the final OBP:

\(OBP = 0.3571\)

However, to compare the performance of two players or teams use our on base percentage calculator for accurate and instant results.

Understanding the results:

Check out the rough comparison below to see if your favorite player is doing well this year:

On-Base Percentage (OBP) Interpretation Table

OBP Range Interpretation Example MLB Players (2023 Season)
Above .400 Elite Shohei Ohtani (.402), Juan Soto (.401)
.380 - .400 Excellent Mike Trout (.399), Mookie Betts (.382)
.350 - .380 Very Good Freddie Freeman (.390), Rafael Devers (.356), Paul Goldschmidt (.364)
.320 - .350 Average Xander Bogaerts (.332), Nolan Arenado (.329), Nick Castellanos (.328)
.300 - .320 Below Average Bryce Harper (.318), Giancarlo Stanton (.317), Francisco Lindor (.310)
.280 - .300 Poor Joey Gallo (.301), Trevor Story (.300), Kris Bryant (.299)
Below .280 Very Poor Miguel Cabrera (.274), Joey Votto (.246), Yasiel Puig (.241)

What is OPS - on-base plus slugging?

On-base Plus Slugging is a baseball statistic that combines two key offensive metrics, such as: 

  • On-base Percentage (OBP) and 
  • Slugging Percentage (SLG)

OPS provides a more comprehensive view of a player's overall offensive contribution.

The formula for OPS is simple:



On-base Percentage (OBP): Measures a player's ability to reach base safely, considering hits, walks, and hit-by-pitches.

Slugging Percentage (SLG): Measures a player's power-hitting ability by giving more weight to extra-base hits.

Alan Walker

Studies mathematics sciences, and Technology. Tech geek and a content writer. Wikipedia addict who wants to know everything. Loves traveling, nature, reading. Math and Technology have done their part, and now it's the time for us to get benefits.

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