AP Chemistry Score Calculator
(Multiple Choice + Long and Short Free Response)
Predict your AP Chemistry score from a practice test: Section I correct answers, plus your marks on the three long and four short questions.
Step 1 — Multiple Choice (50% of Score)
AP Chemistry multiple choice has 60 questions — there's no penalty for guessing
Step 2 — Free Response (50% of Score)
Three questions, 10 points each
Four questions, 4 points each
Estimated Results
Enter your multiple choice and free response scores to estimate your AP score.
How the AP Chem Score Is Calculated
Use this AP Chem score calculator to predict a 1 to 5 score from a practice test. It needs three numbers: multiple choice correct, points on the long questions and points on the short questions. Section I and Section II count equally.
| Section | Questions | Time | Points | Share of score |
|---|---|---|---|---|
| I: Multiple choice | 60 | 1 hour 30 minutes | 60 | 50% |
| II: Long free response | 3 | 1 hour 45 minutes for all seven | 30 (10 each) | 50% together |
| II: Short free response | 4 | 16 (4 each) |
Example. 40 of 60 multiple choice is 66.7%, which adds 33.3. Scoring 18 of 30 on the long questions and 10 of 16 on the short questions gives 28 of 46, or 60.9%, which adds 30.4. The composite is 63.8%, a 4 in this calculator.
Long and Short Questions
The three long questions carry 30 of the 46 free-response points, so they make up about 32.6% of the whole exam. The four short questions carry 16 points, about 17.4%. A single long question is worth more than two short ones.
Each free-response point is worth about 1.09 composite points and each multiple choice question about 0.83. Free-response questions are multipart, so write down every part you can answer. A correct setup or a correct unit can earn a point even when the final number is wrong, if the scoring guidelines name it.
The exam is hybrid digital: multiple choice is answered in the Bluebook app, and free-response answers are handwritten in a paper booklet.
Reading the Estimate
The score lines come from the AP Score Conversion Chart in College Board's scoring worksheet for the 2008 AP Chemistry Released Exam: a composite of 100 out of 150 for a 5, 81 for a 4, 62 for a 3 and 49 for a 2. As a share of the maximum that is 66.7%, 54%, 41.3% and 32.7%. That exam had 75 multiple choice questions and six free-response questions, so its format differs from the current one. College Board sets new lines for every exam and does not publish them, so the result is an estimate.
The example composite of 63.8% is 2.9 points short of the 66.7% line for a 5, which is three more free-response points.
Score a practice exam with the official scoring guidelines and give yourself only the points they list. For other exams, see the AP Biology Score Calculator, the AP Physics 1 Score Calculator and the AP Statistics Score Calculator.
Frequently Asked Questions
How is the AP Chemistry exam scored?
Section I has 60 multiple choice questions in 1 hour 30 minutes and counts for 50% of the score. Section II has seven free-response questions in 1 hour 45 minutes and counts for the other 50%.
How many points are the AP Chem FRQs worth?
College Board lists three long, multipart questions worth 10 points each and four short-answer, multipart questions worth 4 points each. That is 46 free-response points.
How do I calculate my AP Chem composite?
Section I gives (correct ÷ 60) × 50 and Section II gives (points ÷ 46) × 50. For 40 correct and 28 points the two halves are 33.3 and 30.4, so the composite is 63.8%.
Can I use a calculator on the AP Chemistry exam?
Yes. College Board says calculators are permitted and recommends a scientific or graphing calculator for both sections. Equation sheets and reference tables are provided.
Is there a guessing penalty?
No. A wrong answer and a blank answer both score zero, so leave nothing blank.
How accurate is the predicted score?
Treat it as a rough guide. The real cut points are set by College Board and are not released, so a result close to a boundary could land on either side.
Last Updated: October 2026 | Question counts, point values and the 50/50 weighting checked on College Board's AP Chemistry exam page in October 2026. Score lines are from College Board's 2008 released exam worksheet and are an estimate for other years.