On Base Plus Slugging (OBPS) Calculator

LAST UPDATE: September 24th, 2020

OBPS Calculator

Definition – What is On Base Plus Slugging (OBPS)?

OBPS combines a batter’s on base percentage with their slugging percentage.

A higher OBPS means a batter that gets on base more frequently and obtains more bases.

It is intended to balance the two statistics. On-base percentage does not take account the quality of each hit (how many bases it earned). Slugging percentage focuses on the quality of each hit, but does not show the odds of a hit happening (which puts a player on base and avoids an out).

Gross Production Average is a similar metric that weights OBP and SLG differently. Batting Average is a similar but simple and more popular metric.

Formula – How to calculate OBPS

On-base plus slugging (OBPS) is calculated by adding On Base Percentage (OBP) and Slugging Percentage (SLG) together.

On Base Plus Slugging = On Base Percentage + Slugging Percentage


If a batter has an on-base percentage of 0.295 and a slugging average of 0.386, then:
OBPS = 0.295 + 0.386
OBPS = 0.681
Therefore, the batter’s OBPS is 0.681.

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