Evaluate true basketball performance with the CalcGami Player Efficiency Rating (PER) Calculator. Calculate the total impact of a player per minute based on points, rebounds, assists, and turnovers. Save player stats and share scouting reports via WhatsApp.
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A Player Efficiency Rating (PER) Calculator is an advanced basketball analytics tool designed to summarize all of a player’s positive and negative contributions into a single, per-minute statistical rating.
Invented by John Hollinger, PER is widely considered the gold standard for measuring a basketball player’s overall impact on the court. Looking only at “Points Per Game” is misleading; a player who scores 20 points but takes 25 shots, turns the ball over 5 times, and plays 40 minutes is far less efficient than a player who scores 15 points on 8 shots in 20 minutes. This calculator processes a massive formula including Field Goals, Free Throws, 3-Pointers, Assists, Rebounds, Blocks, Steals, and Turnovers/Fouls, adjusting for the pace of the team and the league average (standardized to 15.0). It features History to compare LeBron vs. Giannis, Save Calculation to build your fantasy draft board, and WhatsApp Share to debate the MVP race with your friends.
PER levels the playing field between superstars and role players. Using this tool provides deep analytical insight:
The official PER formula is exceptionally long and complex, involving team and league pace adjustments. Most online calculators use a simplified Unadjusted PER (uPER) formula before applying the league standardizer.
The Plain Text Logic (Simplified uPER):
Step 1: Calculate Positive Contributions
Step 2: Calculate Negative Contributions
Step 3: Combine and Normalize
Follow these steps to generate a player’s rating:
Scenario:
“Analyst Mike” is evaluating a player’s performance in a single game where they played 30 Minutes.
The Calculation (Using a standard simplified linear weight for estimation):
(Note: Full PER requires league-wide data. This is a linear approximation).
Step 1: Positive Score (Estimates)
Step 2: Negative Score (Estimates)
Step 3: Combine and Per-Minute
The Result:
The calculator processes the exact Hollinger formula and outputs a PER of 24.5.
Other Calculators
The formula is specifically designed so that the league average is always exactly 15.00.
35.0+: All-Time Great Season (e.g., Wilt Chamberlain, peak LeBron/Jokic).
25.0 – 30.0: Strong MVP Candidate.
20.0 – 25.0: All-Star.
15.0: Average Player.
< 11.0: Non-rotation/Fringe Player.
PER heavily rewards offensive production (scoring volume and efficiency) but struggles to measure true defensive impact. A player who is an elite perimeter defender but scores very little will often have a below-average PER. It also does not measure “hockey assists” or spacing.
No, because PER is a per-minute stat. A bench player who plays 10 minutes and gets 5 points and 5 rebounds might have a higher PER than a starter who plays 40 minutes and gets 15 points and 10 rebounds. This is why PER is great for finding efficient role players.
Centers generally shoot a much higher field goal percentage (dunks/layups) and gather more rebounds and blocks, all of which are weighted heavily in the PER formula. Guards who shoot more difficult 3-pointers and get fewer rebounds face a slight mathematical disadvantage in the formula.
A true PER requires knowing the “Team Pace” and “League Pace” (possessions per 48 minutes). Most single-game calculators use the “Unadjusted PER” (uPER) because calculating pace for one game without the full box score of both teams is impossible. The result is usually within 1-2 points of the official adjusted PER.
Yes, you can use the logic of the calculator, but you cannot compare the resulting number (e.g., a 25.0 PER) to an NBA player’s PER. The “League Average 15.0” constant is built on NBA data, so the scaling will be completely different for lower leagues.
