Calculate free throw percentage from makes and attempts, find makes or attempts from a percentage, or plan the makes needed to reach a target FT%.
How the Free Throw Percentage Calculator Works
Free throw percentage divides successful free throws by free-throw attempts. The planner combines current totals with a fixed number of future attempts, rounds the required future makes upward, and identifies targets that cannot be reached within that batch.
Formula: FT% = FTM / FTA x 100; required future makes = max(0, ceiling((target percentage / 100) x total attempts – current makes))
Choosing the Right Inputs
Enter official made and attempted free throws from the same period. In planning mode, future attempts are a fixed scenario rather than a prediction; the calculator checks whether enough makes are available to reach the target.
| Current line | Future attempts | Target | Minimum future makes |
|---|---|---|---|
| 8 of 10 | 10 | 80% | 8 |
| 15 of 20 | 10 | 80% | 9 |
| 40 of 50 | 10 | 82% | 10 |
| 72 of 90 | 10 | 80% | 8 |
Understanding Your Results
The requested answer appears first, followed by the resulting percentage, makes, misses, and attempts. Percentage mode shows next-shot impact; planning mode shows the minimum future makes, best attainable rate, and the result with one fewer make.
Worked Example
A player at 40 of 50 who expects 10 more attempts needs 10 future makes to finish at 50 of 60, or 83.3%. Nine makes would produce 81.7%, below an 82% target.
Assumptions and Limitations
FT% is descriptive and does not predict the next attempt. Small samples move sharply, while large season samples change slowly. Fatigue, pressure, shot routine, and competition level are not modeled.
Sources
NBA. Stats Glossary. Probability and interval models follow the NIST/SEMATECH binomial distribution and Wilson score interval formulas; they assume independent attempts with constant make probability.
