Calculator Input
Example Data Table
| Example Player | Games | Minutes | PTS | FGM | FGA | 3PM | FTM | FTA | ORB | DRB | AST | STL | BLK | TOV | PF | Team Pace | League Pace | Estimated PER |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Example Guard | 1 | 31 | 18 | 7 | 15 | 2 | 2 | 3 | 1 | 5 | 4 | 1 | 0 | 2 | 3 | 99.5 | 100.8 | 23.04 |
This sample shows a strong one-game line. You can replace every field with season totals, rolling splits, or single-game box score values.
Formula Used
This calculator uses an estimated Hollinger-style model built from box score production, negative events, and pace adjustment.
| Positive Production | PTS + 1.5×AST + 1.2×ORB + 0.9×DRB + 2.0×STL + 1.7×BLK + 0.5×3PM + 0.2×FGM |
|---|---|
| Negative Drag | 0.7×Missed FG + 0.5×Missed FT + 1.8×TOV + 0.3×PF |
| Raw Impact | Positive Production − Negative Drag |
| Unadjusted PER-Style Score | (Raw Impact ÷ Minutes) × 30 |
| Estimated PER | Unadjusted PER-Style Score × (League Pace ÷ Team Pace) |
| True Shooting % | PTS ÷ [2 × (FGA + 0.44×FTA)] × 100 |
The official public PER formula uses league constants and team factors that are more detailed than this page. This version is practical, fast, and useful for scenario testing.
How to Use This Calculator
- Enter a player name and a sample label.
- Type total minutes and total games for the sample.
- Enter the full box score totals or single-game values.
- Provide team pace and league pace for normalization.
- Press the calculate button to generate the result.
- Review Estimated PER, raw impact, efficiency, and penalties.
- Inspect the Plotly graph to see which events drive value.
- Download a CSV or PDF report for your records.
FAQs
1. What does this calculator measure?
It estimates player efficiency from box score data, minutes, and pace. The result highlights production, penalties, and a pace-adjusted PER-style rating for fast comparisons.
2. Is this the same as the official published PER?
Not exactly. Official PER uses additional league constants and detailed team adjustments. This page creates a practical estimate that is easier to run with custom inputs.
3. Can I use season totals instead of one game?
Yes. PER is a rate idea, so totals work well if minutes are included. You can also use ten-game stretches, playoff samples, or a single performance.
4. Why do pace values matter?
Pace adjusts for possession volume. Players on faster teams naturally collect more raw events, so pace normalization helps compare production more fairly across contexts.
5. What inputs usually raise the rating most?
Points, assists, steals, blocks, and rebounds push the score upward. Turnovers, missed shots, missed free throws, and fouls pull it down.
6. Can a player get a negative result?
Yes. If negative plays outweigh positive production, the raw impact can drop below zero. That usually means poor shooting, many turnovers, or extremely low total output.
7. What is a good estimated PER?
Around 15 is typically a solid average reference point. Scores above 20 often indicate strong performance, while numbers above 25 usually suggest star-level production.
8. What do the CSV and PDF buttons export?
They export the summary table and component breakdown shown after calculation. This makes reporting, sharing, and offline review much easier.