NBA Player Efficiency Rating (PER) Calculator
Unit Converter ▲
Unit Converter ▼
From: | To: |
Find More Calculator☟
The NBA's Player Efficiency Rating (PER) is a single-number rating that sums up a player's statistical accomplishments in a game into one figure. Developed by John Hollinger, this metric attempts to boil down the myriad aspects of a player's performance into one number. PER considers a player's accomplishments, such as scoring and assists, and negatives, like missed shots and turnovers, then adjusts for pace of play to give a per-minute rating of a player's performance.
Historical Background
PER was designed to provide a more comprehensive evaluation of a player's performance than traditional statistics. It incorporates a variety of statistical achievements to reflect a player's overall impact on the game.
Calculation Formula
The formula for calculating PER is as follows:
\[ \text{PER} = \frac{\text{Total Points} + \text{Total Rebounds} + \text{Total Assists} + \text{Total Steals} + \text{Total Blocks} - (\text{Field Goals Attempted} - \text{Field Goals Made}) - (\text{Free Throws Attempted} - \text{Free Throws Made}) - \text{Turnovers}}{\text{Games Played}} \]
Example Calculation
For a player who, over the course of 5 games, scores 120 points, grabs 30 rebounds, provides 25 assists, steals the ball 10 times, blocks 5 shots, attempts 90 field goals and makes 45, attempts 20 free throws and makes 15, and commits 12 turnovers:
\[ \text{PER} = \frac{120 + 30 + 25 + 10 + 5 - (90 - 45) - (20 - 15) - 12}{5} = \frac{193}{5} = 38.6 \]
Importance and Usage Scenarios
PER is used to evaluate a player's efficiency and overall contribution to the game beyond traditional metrics. It's widely used by analysts, coaches, and fans to compare players across different positions and eras.
Common FAQs
-
What does PER tell us about a player?
- PER summarizes a player's statistical achievements in every major category into a single number, adjusted per minute, providing a measure of a player's per-game efficiency and contribution.
-
How is PER adjusted for pace?
- While the basic PER formula does not directly adjust for pace, Hollinger developed a pace-adjusted version of PER that accounts for the team's pace of play, making comparisons between players in different systems more equitable.
-
Can PER be used to compare players from different eras?
- Yes, PER can be a useful tool for comparing players from different eras, as it's a standardized metric that adjusts for the varying paces and styles of play across different basketball eras.