ACT Score Calculator — Composite & Percentile
Enter your four ACT section scores (English, Mathematics, Reading, Science — each 1–36) to instantly compute your composite score and see where you stand on the national score distribution.
Average of four section scores, rounded to the nearest whole number
- 1
Sum of section scores
24 + 22 + 23 + 22 = 91 - 2
Unrounded average
91 ÷ 4 = 22.75 - 3
ACT composite
round(22.75) = 23The composite is the simple average of the four section scores rounded to the nearest whole number.
How does this calculator work?
Average your four ACT section scores (English, Math, Reading, Science — each 1–36) and round to get the composite: Composite = round((E + M + R + S) ÷ 4). Approximate percentile is based on 2023 national norms (mean ≈ 20.3, SD ≈ 5.5). Each section is equally weighted.
Formula
How this is calculated
The ACT composite score is the simple average of your four section scores — English (75 questions), Mathematics (60), Reading (40), and Science (40) — each scaled 1–36, rounded to the nearest whole number. If all four sections are equal your composite matches them exactly; mixed scores average out, and because of rounding a 0.5 overage tips you one point higher.
Percentile rankings compare your composite to all ACT test-takers in a given year. The approximate percentiles shown here are derived from ACT 2023 national norms (mean ≈ 20.3, SD ≈ 5.5). They are illustrative estimates — the official percentile for your specific test date may differ slightly and is printed on your score report.
Section scores are equally weighted, so improving a weaker section by a few points lifts your composite just as much as improving your strongest section. The bell-curve visualization marks your score within the national distribution so you can see the gap to common college target ranges.
Frequently asked questions
The composite is the arithmetic mean of your English, Math, Reading, and Science scores (each 1–36), rounded to the nearest whole number. There is no bonus or penalty for any section.
A score at or above the national average (~20–21) is "average." Selective universities typically look for 30+ composites, and a 34+ places you in roughly the top 1–2% nationally. What counts as "good" depends on your target school — check their reported middle 50% ranges.
Many colleges accept the ACT superscore — they take the best section score from each test date and compute a new composite from those bests. If your college does this, you can enter your best individual section scores to preview your potential superscore composite.
Also known as
TG we-Calculate Editorial Team. (2026). ACT Score Calculator — Composite & Percentile [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/act-score-calculator
TG we-Calculate Editorial Team. "ACT Score Calculator — Composite & Percentile." TG we-Calculate. 2026. https://we-calculate.com/calculator/act-score-calculator.
TG we-Calculate Editorial Team, "ACT Score Calculator — Composite & Percentile," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/act-score-calculator
@misc{wecalculate_act_score_calculator, title = {ACT Score Calculator — Composite & Percentile}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/act-score-calculator}}, year = {2026}, note = {TG we-Calculate} }
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