AP Biology Score Calculator
Enter your multiple-choice count and free-response points to estimate your AP Biology composite score and predicted 1–5.
The AP Biology exam is an even split — 60 multiple-choice questions worth 50% and six free-response questions worth the other 50%. This calculator scales each section onto a 120-point composite the way the College Board does and estimates your 1–5.
How AP Biology is scored
Your multiple-choice raw score counts directly as up to 60 points. The six free-response questions (36 raw points) are scaled to the other 60.
MC points = MC correct (max 60)
FRQ points = (FRQ raw ÷ 36) × 60
Composite = MC + FRQ (out of 120)
FRQ points = (FRQ raw ÷ 36) × 60
Composite = MC + FRQ (out of 120)
| Section | Raw | Weight |
|---|---|---|
| Multiple choice | 60 questions | 50% |
| 2 long free-response | 10 points each (20) | 50% |
| 4 short free-response | 4 points each (16) |
Composite score to AP score (estimated)
College Board doesn't publish official cut scores, and they shift a little each year. These commonly cited estimates are what this calculator uses.
| AP Score | Composite (out of 120) |
|---|---|
| 5 | 93 – 120 |
| 4 | 74 – 92 |
| 3 | 51 – 73 |
| 2 | 28 – 50 |
| 1 | 0 – 27 |
Worked example
42 of 60 multiple choice, plus 12 long and 10 short free-response points (22 of 36):
| MC = 42 | 42 |
| FRQ = (22 ÷ 36) × 60 | 36.7 |
| Composite = 42 + 36.7 | 78.7 → score of 4 |
Frequently asked questions
What do I need for a 5 in AP Biology?
Roughly 93 of 120 composite on these estimates — about 78% of available points. The exact line shifts a little each year.
Is there a guessing penalty?
No. Wrong answers cost nothing, so answer all 60 multiple-choice questions.
Can I use a calculator on AP Biology?
Yes — a four-function, scientific or graphing calculator is permitted on both sections, along with the provided formula sheet.
How accurate is this estimate?
The composite uses the official 50/50 weighting exactly. The 1–5 mapping is an estimate, since College Board sets and doesn't publish yearly cutoffs.
Related calculators
Unofficial estimate for study planning. Composite uses official section weights; the 1–5 cutoffs are estimated and not published by the College Board. AP is a trademark of the College Board, which is not affiliated with and does not endorse this tool.