ACT Composite Score Calculator
Average your four ACT section scores into a composite from 1 to 36.
Exact average of the four sections: 29.75 (119 ÷ 4), rounded to the nearest whole number.
Your ACT composite is the average of your four section scores — English, Math, Reading, and Science — rounded to the nearest whole number, on a 1–36 scale. For example, 30, 28, 32, and 29 sum to 119; 119 ÷ 4 = 29.75, which rounds up to a composite of 30. The optional Writing test is not included.
How the ACT composite is calculated
The ACT gives you four multiple-choice section scores — English, Math, Reading, and Science — each on a scale of 1 to 36. Your composite score, the single number colleges usually quote, is simply the average of those four sections rounded to the nearest whole number. Because it is an average of four equal parts, no single section counts more than another.
The composite also runs from 1 to 36, the same range as each section. A perfect composite of 36 means the four sections averaged to 36 (or rounded up to it). The rounding rule is the standard one: a fractional average of exactly ½ or higher rounds up, while anything below ½ rounds down.
Worked example
Suppose you scored 30 in English, 28 in Math, 32 in Reading, and 29 in Science. Add them: 30 + 28 + 32 + 29 = 119. Divide by four: 119 ÷ 4 = 29.75. Since 0.75 is above ½, round up — your composite is 30.
- 1 Gather your four section scores. Take your English, Math, Reading, and Science scores — each an integer from 1 to 36. The Writing score is separate and is not used here.
- 2 Add the four scores. For example, 30 + 28 + 32 + 29 = 119.
- 3 Divide the sum by four. This gives the exact average: 119 ÷ 4 = 29.75.
- 4 Round to the nearest whole number. A remainder of ½ or more rounds up, so 29.75 becomes a composite of 30.
Example section sets and their composites
The composite is the average of the four sections, rounded to the nearest whole number — an average ending in exactly .5 rounds up.
| English | Math | Reading | Science | Average | Composite |
|---|---|---|---|---|---|
| 36 | 35 | 36 | 34 | 35.25 | 35 |
| 30 | 28 | 32 | 29 | 29.75 | 30 |
| 24 | 24 | 25 | 25 | 24.50 | 25 |
| 20 | 21 | 20 | 20 | 20.25 | 20 |
| 18 | 17 | 18 | 19 | 18.00 | 18 |
Reading your composite in context
The composite is the number most colleges list in their score ranges, but admissions officers can still see your individual sections. A lopsided profile — a very high Math and a much lower Reading — can matter for programs that care about a specific subject, even when the composite looks average.
Keep three things in mind. First, the Writing test is scored separately on a 2–12 scale and never factors into the composite. Second, each section is itself capped at 1–36, so the composite can never exceed 36. Third, superscoring policies vary by college: some schools recompute a composite from your best section scores across multiple test dates, while others use only a single sitting — check each school’s policy before assuming a superscore applies.