AP® Biology Score Calculator
Enter your practice test results to estimate your AP® Biology score and see exactly what it takes to reach the next one.
Last checked 2026-10-24
Add up your rubric points: long questions 1–2 (9 points each) and short questions 3–6 (4 points each).
How the AP® Biology composite is calculated
Each section is converted to a percentage and weighted using the College Board's published exam weights:
| Section | Format | Weight |
|---|---|---|
| Multiple choice | 60 questions, 90 min | 50% |
| Long free response | 2 questions × 9 points | 26.5% |
| Short free response | 4 questions × 4 points | 23.5% |
The free-response section (50%) has 34 raw points: two long questions worth 9 each and four short questions worth 4 each. Each point counts the same, so a long question carries more than twice the weight of a short one.
The weighted composite (0–100) is compared with estimated score cutoffs:
| AP® score | Estimated composite |
|---|---|
| 5 | 66 and above |
| 4 | 53–65 |
| 3 | 40–52 |
| 2 | 28–39 |
| 1 | Below 28 |
These cutoffs are estimates based on past exams and score distributions. The College Board doesn't publish its raw-score conversion and adjusts it each year. If you're within 3 points of a boundary, the calculator shows both possible scores.
Source for the exam format: the College Board's official exam page.
Frequently asked questions
How is the AP Biology exam scored?
Multiple choice (60 questions, 90 minutes) is 50% of the score. Free response (6 questions, 90 minutes) is the other 50%: two long questions worth 9 points each and four short questions worth 4 points each.
What percentage do you need for a 5 on AP Bio?
Roughly two-thirds of the weighted composite, based on past exams. The College Board doesn't publish cutoffs, and they move a little each year.
Is AP Biology digital?
It's hybrid: you answer multiple choice in the Bluebook app and handwrite free-response answers in a paper booklet.
Which free-response questions matter most?
The two long questions. Each is worth 9 points, about 13% of your total score on its own.