NBA Advanced Stats Calculator
Enter a player's single-game box score to instantly compute shooting efficiency and impact metrics like FG%, eFG%, TS%, and Game Score.
What this NBA calculator does
This NBA calculator turns raw box-score numbers into insights you can actually use. Instead of just seeing that a player scored 28 points, you can quickly evaluate how efficient those points were and how much total impact the player had during that game.
With one click, this tool computes:
- FG% (Field Goal Percentage)
- FT% (Free Throw Percentage)
- eFG% (Effective Field Goal Percentage)
- TS% (True Shooting Percentage)
- Game Score (single-game impact estimate)
- Per-36 scoring, rebounding, and assists when minutes are provided
Why these metrics matter
FG% is useful, but incomplete
FG% treats all made shots the same, even though 3-point shots are worth more than 2-point shots. That means two players can have the same FG% while one is actually creating more points per shot attempt.
eFG% corrects for 3-point value
Effective field goal percentage solves part of that problem by giving extra value to made threes. It is one of the fastest ways to judge perimeter efficiency in modern NBA offense.
TS% captures total scoring efficiency
True shooting percentage goes further by including free throws. Since free throws are a major part of scoring value, TS% is often the best quick metric for how efficiently a player scored overall.
Game Score gives a single-game snapshot
Game Score (popularized by John Hollinger) bundles points, rebounds, assists, steals, blocks, and mistakes into one number. It is not perfect, but it is excellent for comparing single-game performances at a glance.
Formulas used by this calculator
- FG% = FGM / FGA
- FT% = FTM / FTA
- eFG% = (FGM + 0.5 × 3PM) / FGA
- TS% = PTS / (2 × (FGA + 0.44 × FTA))
- Game Score = PTS + 0.4×FGM − 0.7×FGA − 0.4×(FTA−FTM) + 0.7×ORB + 0.3×DRB + STL + 0.7×AST + 0.7×BLK − 0.4×PF − TOV
- Per-36 = Stat / Minutes × 36
How to use the nba calculator effectively
- Copy a player's box-score line from an NBA game.
- Enter the numbers exactly (especially attempts vs makes).
- Click Calculate NBA Metrics.
- Read efficiency metrics first (eFG%, TS%), then context metrics (Game Score, Per-36).
Quick interpretation guide
TS% reference points (rough guide)
- Below 50%: inefficient scoring night
- 55% to 60%: solid to good efficiency
- 60%+: excellent efficiency
Game Score reference points (single game)
- 10: average-good performance
- 20: very strong game
- 30+: elite star-level game
Important limitations
No single calculator can capture everything in basketball. This tool does not include:
- On/off impact
- Defensive positioning and rotations
- Screening value and spacing gravity
- Lineup strength and opponent quality
Use this as a smart starting point, then add film and context for deeper analysis.
Final thoughts
A good nba calculator helps turn a basic box score into meaningful insight quickly. Whether you're a fan, fantasy player, coach, student journalist, or data nerd, tools like this let you evaluate efficiency and game impact with much better clarity than points alone.
If you want to compare multiple players, run each game line through the calculator and track TS%, eFG%, and Game Score side by side. You'll spot patterns in consistency, shot quality, and overall influence much faster.