ACT Score Calculator

Four sections, one scale from 1 to 36

The ACT reports a score for each section on the same 1 to 36 scale, then combines some of them into a composite. The scale is not a percentage and it is not a count of questions. It comes from a conversion table that maps the number of correct answers on a given test form to a scale score, so a form given in September and a form given in April can be compared.

The sections and their scored question counts, from ACT's score guide:

There is no penalty for a wrong answer, so the raw score is the number correct. That is why a blank costs the same as a wrong answer, and why finishing every question is usually worth more than being careful about the ones you are unsure of.

The writing test sits on its own 2 to 12 scale, built from four domain scores, and it never touches the composite. A strong essay does not rescue a weak math score, and a weak essay does not pull a 32 down.

How the composite is calculated now

For tests taken from September 2025 onward, the composite is the average of three scores: English, math and reading. Add them, divide by 3, then round to the nearest whole number. Fractions below one half round down, fractions of one half or more round up.

That is a change. Before 2025 the composite averaged four sections and included science. ACT phased the change in during 2025, first for national online testing in April, then for every test in September. A student who tested in 2023 has a four section composite, and a student who tests in 2027 has a three section one. Both are called an ACT composite, which is why comparing scores across that line needs care.

The arithmetic is short enough to do in your head once you have the three numbers:

1. English plus math plus reading gives a total between 3 and 108.
2. Divide the total by 3 to get an average between 1.0 and 36.0.
3. Round to the nearest whole number to get the composite.

A total of 90 gives exactly 30.0, so the composite is 30. A total of 91 gives 30.33, which rounds down to 30. A total of 92 gives 30.67, which rounds up to 31. Those two totals are one point apart and produce different composites, which is why a single section point can matter more than it looks.

Worked example: English 30, math 28, reading 32

Take a student with English 30, math 28, reading 32 and science 27.

• Three section total: 30 plus 28 plus 32 = 90
• Three section average: 90 divided by 3 = 30.0
• Composite: 30
• Four section total: 90 plus 27 = 117
• Four section average: 117 divided by 4 = 29.25
• Legacy composite: 29

Same scores, two answers, and the difference is the science section. Under the rules in force since September 2025 the student reports a 30. Under the older four section rule the same scores report a 29. That one point is not a rounding trick, it is a different definition of the composite.

Now look at what the next point costs. To reach a 31 composite the average has to hit 30.5, which means a total of 91.5. Since scores are whole numbers, the student needs 92, which is 2 more points spread across English, math and reading. Two points could come from one section moving from 28 to 30, or from two sections moving up one each.

This is the useful part of the calculator. It turns a vague goal, such as getting a 32, into a specific target: a total of 95 or better across three sections. A student at 90 needs 5 points, and knowing that shapes where the next round of practice should go.

Superscore: your best sections across test dates

A superscore takes your best English score from any sitting, your best math score from any sitting and your best reading score from any sitting, then averages those three. It rewards retaking, because a bad day in one section no longer drags the whole composite down.

ACT builds the superscore automatically for anyone who has tested more than once since September 2016. There is no form to file. ACT's superscore guide walks through an example where English 32 from April 2024, math 28 from September 2024 and reading 30 from April 2025 combine to a 30 superscore.

The arithmetic is the same as the composite, applied to a picked set of numbers:

• Best English 32, best math 28, best reading 30: total 90, average 30.0, superscore 30
• Best English 30, best math 28, best reading 32: total 90, average 30.0, superscore 30

Notice that the superscore can be identical to a single sitting composite, or higher. It cannot be lower, because every score it uses is the best you have. A student with composites of 28, 29 and 27 might carry a superscore of 31, built from a 33 in English, a 30 in math and a 30 in reading that never lined up on the same day.

Whether a college uses it is a separate question. Many do, and some ask for all scores from all sittings. Check the admissions page for each school, then decide what to send.

Percentiles move every year

A percentile tells you where a score sits among students who took the test, not how many questions you answered correctly. Because the comparison group changes every year, the percentile attached to a score changes too.

ACT publishes national ranks built from recent high school graduates. The table in use for tests from September 2026 through August 2027 is based on graduates from 2024 to 2026. Under it, a composite of 30 is the 94th percentile and the national mean is 19.1.

Two rules follow. First, never compare a percentile from one year's table with a percentile from another, because the group behind the number is different. Second, never average percentiles. A 90th percentile in English and a 50th in math do not average to a 70th percentile composite, because percentiles are positions on a curve, not points you can add.

If you need a single comparison, convert the percentile back to a score and compare scores. That is the number colleges read.

What a score means for college fit

ACT groups composites into rough admissions bands. The ranges below come from ACT's own score guide, and they describe where a score tends to be competitive, not where it guarantees anything.

• 18 to 20: widely accepted at regional and open admission colleges.
• 20 to 23: competitive at many mid tier colleges.
• 24 to 28: strong for more selective colleges.
• 30 to 36: widely accepted at top tier schools.

Those bands are a starting point, not a verdict. A school that admits 40% of applicants might have a middle 50% range of 27 to 32, which means a 28 is inside the range and a 24 is below it but not out of the running. Holistic review means the score is one line in a file that also holds grades, course rigor and essays.

The useful move is to look up the middle 50% range at four or five schools you would attend, using a tool such as the U.S. Department of Education's College Navigator, then compare your composite against it. If you are at or above the top of the range at every school on the list, the score is done. If you are below the bottom at most of them, a retake has a clear target.

Course load still matters more than a single test score at most public universities, and many now admit without a test at all. Check the current policy for each school rather than assuming, because test optional rules have shifted year to year.

Retaking: when a second sitting pays

A retake is worth it when the gap between your composite and your target is small enough to close with practice, and when the superscore lets you keep what already worked.

Do the arithmetic before you register. A student at 90 total needs 2 points for a 31 and 5 points for a 32. Raising one section by 2 is realistic with targeted practice; raising three sections by 2 each is a bigger project. A student at 84, which is a 28 composite, needs 6 points to reach 30, and that usually means work on two sections rather than one.

The superscore changes the risk. If English is already a 34 and math is a 24, a retake can focus entirely on math without threatening the English number, because the superscore keeps the 34. That is the case where a second sitting has the best return.

Two cautions. Some colleges ask for every score, and a lower composite on the second sitting is visible to them even if the superscore rises. And a retake costs a Saturday morning plus a registration fee, so it should buy something specific: a target composite for a scholarship, a program, or a school on your list.

Four mistakes that make the numbers lie

The arithmetic is simple, and most errors come from mixing rules rather than from bad math.

• Using the old four section formula. Averaging science into a 2027 composite produces a number ACT will not report. Since September 2025 the composite uses three sections.
• Averaging percentiles. A 90th and a 50th do not make a 70th. Convert to scores, average those, then look up the percentile of the result.
• Comparing across norm years. A 28 was the 91st percentile under the 2024 to 2026 norms. A chart built on a different graduating class can show a different rank for the same 28.
• Rounding twice. Round the average once, at the end. Rounding each section first, or rounding the total before dividing, shifts the composite by a point in either direction.

One more, less obvious: a superscore is not an official score report. It is a calculation ACT performs and colleges may or may not use. If a school does not superscore, sending a superscore report does not create one, and the admissions office will read the sittings it asks for.

Keep the score report PDFs. Every number on this page can be checked against them in a minute, and having the reports makes a retake decision much easier than working from memory.