Free Throw Percentage Calculator

Track makes and attempts with clean, quick inputs. Compare multiple games and view confidence bounds. Download reports, set targets, and improve every session now.

Calculator

Switching mode refreshes the form with your choice.
If provided, per-game averages are calculated.
Plans required makes after additional attempts.
Clear

Example Data Table

Segment Made Attempted Percentage
Game 1 6 8 75.00%
Game 2 9 10 90.00%
Game 3 4 6 66.67%
Overall (weighted) 19 24 79.17%
Tip: Paste these as multiple lines like 6,8 then 9,10 then 4,6.

Formula Used

Free Throw Percentage = (Free Throws Made ÷ Free Throws Attempted) × 100

When you enter multiple lines, the calculator sums all makes and attempts first, then computes a weighted overall percentage. This avoids giving small samples the same weight as large samples.

The confidence range uses the Wilson score method for a binomial proportion, which is stable for small samples and percentages near 0% or 100%.

How to Use This Calculator

  1. Select Single stat line or Multiple lines.
  2. Enter makes and attempts, or paste one line per game.
  3. Optionally add a target percentage and future attempts.
  4. Click Calculate to see results above the form.
  5. Use Download CSV or Download PDF to export.

Why Free Throw Percentage Matters

Free throws are points, so efficiency swings games. A two-point trip to the line is worth 2×(FT%/100) expected points. Raising accuracy from 70% to 80% adds 0.20 expected points per pair, which accumulates over a season. Coaches also track late reliability, where one miss can flip win probability. At 75%, each foul shot is 0.75 points, so a common two-shot foul yields 1.50 points. That efficiency rivals many halfcourt possessions and keeps defenses honest when they foul to stop the clock.

Volume, Sample Size, and Stability

Percentage alone can mislead when attempts are low. Going 7 for 8 notes 87.5%, but one extra miss drops it to 77.8%. Larger samples dampen that volatility: 70 for 80 stays above 85% even after several misses. Log every game’s makes and attempts, then summarize totals to get a weighted season rate. Track clutch attempts separately, because pressure can depress results even when your overall percentage stays stable over time.

Benchmarks and Practical Targets

Different levels vary, but simple ranges help planning. Below 65% is a major weakness and often invites intentional fouling. Around 70–75% is functional for many recreational and school players. Consistently above 80% is strong, and above 85% is elite in most competitive settings. Set a short-term goal of +3 to +5 percentage points, then reevaluate after 100 attempts.

Using Targets to Map Improvement

If you set a target and expect future attempts, you can estimate the makes needed. Required makes = (Target%×(CurrentAttempts+FutureAttempts) − CurrentMakes). For example, 140/200 (70%) aiming for 75% with 60 more attempts needs 0.75×260 − 140 = 55 makes, or 55/60 (91.7%), which is unrealistic. That signals you should extend the horizon or choose a smaller target.

Variance, Confidence, and Decision Making

Even steady shooters fluctuate game to game. A confidence range describes plausible true accuracy given observed results, helping you avoid overreacting to hot or cold streaks. When the interval is wide, keep collecting attempts before changing form or routine. When it is narrow, changes in percentage are more likely to reflect real progress, not noise.

FAQs

What does the calculator do?

It converts makes and attempts into a percentage, and can also estimate what you need to hit a target rate over future attempts, plus a confidence range for your current sample.

Why not average each game’s percentage?

A simple average weights a 2-for-2 game the same as 20-for-25. Summing makes and attempts first gives a weighted percentage that reflects total volume.

What if attempts are zero?

With zero attempts there is no valid percentage. The tool will show 0% and a note so you can correct inputs before exporting results.

How do I enter multiple lines quickly?

Paste one stat line per row using formats like 7/10, 7,10, or 7 10. The calculator detects separators and totals everything automatically.

What does the confidence range mean?

It’s an estimated interval for your true shooting ability given your results so far. Wider ranges mean you need more attempts before drawing strong conclusions.

Can I export the results for coaches or logs?

Yes. Download CSV for spreadsheets and tracking, or download a PDF summary that prints cleanly for sharing with a coach or team staff.

Built for quick checks, season tracking, and improvement planning.

Related Calculators

Points Per GamePlus Minus CalculatorTrue Shooting PercentageSteal Rate Calculator

Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.