AP Computer Science A score calculator
On the AP Computer Science A exam, the 42 multiple-choice questions are 55% of your score and the free response, four coding questions worth 7, 7, 5 and 6 points, the other 45%, so one free-response point counts as much as about 1.4 multiple-choice answers. Enter your practice marks for your score out of 100 on those weights. The College Board publishes no chart that turns it into a 1 to 5, so this page does not guess one.
Example: weighted AP CSA score
39.3 from multiple choice (30 of 42) + 27 from free response (15 of 25), by the College Board’s weights: 55% and 45%.
One more multiple-choice answer adds 1.31 and one more free-response point 1.80: a free-response point is worth as much as 1.4 multiple-choice answers.
To reach 70 of 100: 18 of the 25 free-response points with your 30 multiple-choice answers (3 more than now), or 33 of the 42 multiple-choice answers with your free response as it is (3 more).
- Multiple choice, 30 right39.3 of 55
- Question 1, 4 of 77.2 of 12.6
- Question 2, 4 of 77.2 of 12.6
- Question 3, 3 of 55.4 of 9
- Question 4, 4 of 67.2 of 10.8
The College Board publishes no chart that turns this into a 1 to 5 for today’s exam, so this is not your AP score.
The exam format and the 2026 scoring guidelines checked on AP Central . AP and Advanced Placement are trademarks of the College Board, which does not make or endorse this calculator.
How the weighted score is worked out
- The exam: 42 multiple-choice questions (mostly single questions, in 1 hour 30 minutes), then 4 free-response questions in 1 hour 30 minutes, each one Java code you write.
- Multiple choice: your answers right ÷ 42 × 55. Each answer is worth 1.31.
- Free response: add your question scores (out of 25), then ÷ 25 × 45. Each point is worth 1.80.
- Add the two: a score out of 100 with the sections in the College Board’s proportions, 55% and 45%.
The College Board does not say how it combines the sections into the composite behind your AP score, only what share each section has, so this is the plainest reading of those shares.
The exam changed in May 2026: 42 multiple-choice questions for 55% of the score (before, 40 for 50%) and four shorter free-response questions with 25 points for 45% (before, 36 points for 50%). The exams up to May 2025, and practice exams taken from them, use the earlier weights, so this page does not fit them.
A worked example
30 of 42 multiple-choice answers right: 30 ÷ 42 × 55 = 39.3. Free-response scores of 4, 4, 3 and 4 make 15 of 25: 15 ÷ 25 × 45 = 27. Together 66.3 of 100.
Where the next points are: a multiple-choice answer adds 1.31 and a free-response point 1.80, so one free-response point counts as much as about 1.4 multiple-choice answers.
What each free-response question is worth
Each question’s points are from the College Board’s 2026 scoring guidelines; its share of your 100 follows from the 45% the free response carries.
| Question | What you write | Points | Of your 100 | As many multiple-choice answers as |
|---|---|---|---|---|
| Question 1 | Methods and control structures | 7 | 12.6 | 9.6 |
| Question 2 | Class design | 7 | 12.6 | 9.6 |
| Question 3 | Data analysis with ArrayList | 5 | 9 | 6.9 |
| Question 4 | 2D arrays | 6 | 10.8 | 8.2 |
To practice, AP Central posts the last three years’ AP CSA free-response questions with their scoring guidelines and sample answers from students who sat the exam: past AP CSA exam questions. Only the questions from May 2026 on fit these weights.
Why there is no 1 to 5 here
The College Board sets the composite each AP score needs after every exam and publishes no chart for today’s AP CSA exam. A 1 to 5 from any calculator is someone’s guess at those cut points.
What it does publish is how students scored. In 2026: 25% a 5, 26% a 4, 15% a 3, 11% a 2 and 23% a 1; 66% scored a 3 or higher. Those are shares of students, not the marks each score needed.
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Sources: College Board, AP Central, AP Computer Science A Exam; College Board, AP Computer Science A 2026 Scoring Guidelines; College Board, AP Students, 2026 AP Score Distributions; College Board, AP Central, AP Computer Science A Course and Exam Description (effective fall 2025).