Enter your four already-scaled ACT section scores to get your composite score.
Calculator verified • Last updated: August 2026
This calculator does not convert raw questions-correct counts to scaled scores — the ACT's raw-to-scaled conversion isn't a single published table (it varies by test form). Enter the scaled 1-36 score each section already produced.
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Your ACT composite score is the average of your four section scores — English, Math, Reading, and Science — rounded to the nearest whole number. This averaging-and-rounding step is fixed, published ACT methodology, which is exactly why this calculator can compute it precisely from your section scores.
$$\text{Composite} = \text{round}\left(\frac{\text{English} + \text{Math} + \text{Reading} + \text{Science}}{4}\right)$$
The rounding follows the standard convention: an average that lands exactly on a half-point rounds up. An average of 24.5 rounds to a composite of 25, not down to 24.
Worked example: English 24, Math 26, Reading 25, Science 23. Sum: 24 + 26 + 25 + 23 = 98. Average: 98 / 4 = 24.5. Rounded up: composite 25.
A lot of ACT-related calculators online claim to convert a raw questions-correct count directly into a 1-36 scaled score using a single lookup table. That table doesn't actually exist as one fixed, official reference. The ACT's raw-to-scaled conversion varies by test form and test date — it's intentionally calibrated per form so that a 32 on one test date represents the same difficulty-adjusted performance as a 32 on another, and the testing organization does not publish the exact per-form conversion.
Any tool that shows a raw-to-scaled table as if it were the official, exact conversion is presenting invented precision as fact. This calculator sidesteps that problem entirely by asking for the number you already have — your scaled section score, straight off an official report or a practice test's own answer key — and handling only the part of ACT scoring that genuinely is fixed and published: turning four scaled section scores into one composite.
Averaging only two or three sections instead of all four is the most common input error — the composite always uses all four sections, even if one felt much harder than the others. Confusing a practice test's raw score with its scaled score is another: a practice book's raw-to-scaled table is specific to that one practice form and isn't interchangeable with a different form's table, let alone the real exam's.
Scaled Score — a 1-36 score for one section, already adjusted for that specific test form's difficulty. This is what you enter here.
Composite Score — the rounded average of all four section scaled scores, the single number most commonly reported as "your ACT score."
Raw Score — the plain count of questions answered correctly on a section, before any scaling is applied. Not directly usable here.
Because the ACT's raw-to-scaled conversion table isn't one fixed, published table. Testing organizations vary it by test form specifically to keep individual test dates comparable in difficulty, and they don't release the exact per-form conversion. A calculator claiming to reproduce it exactly would be presenting invented precision as official. This tool instead handles the one part of ACT scoring that is fixed, published methodology: averaging four already-scaled section scores into a composite.
The composite is the average of your four section scores (English, Math, Reading, Science), rounded to the nearest whole number using standard rounding, where an exact .5 rounds up.
On an official ACT score report, each section already shows as a 1-36 scaled score. On a practice test, use the answer key's own scaled-score conversion table for that specific practice form, not raw questions correct.