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How many questions can you miss on the ACT?

Last verified against ACT's official scoring key:

On the enhanced ACT, you can miss about 3 scored questions and still get a 36 composite, about 9 for a 34, 18 for a 30, 32 for a 25 and 50 for a 20. These counts come from ACT's 2025 official practice form and cover English, Math and Reading, the three sections in the composite. Curves shift a little from test to test.

Use the calculator to plan your own split, then see the full tables by composite and by section below.

ACT miss calculator

Pick the composite you want. We show the section scores that get you there with the most room for mistakes, keeping every section within a point of your goal.

You can miss up to 18 of 108 scored English, Math and Reading questions. That plan's composite is 30.

English
4 misses
Score 31: 36 of 40 scored correct
No 30 on this form; next score up is 31
Mathematics
10 misses
Score 29: 31 of 41 scored correct
Reading
4 misses
Score 30: 23 of 27 scored correct
No 29 on this form; next score up is 30
Adjust the section scores (for example, lean on your strongest section)

Based on ACT National Online Practice Test Scoring Key (2025, JA04037.CJ20252), pages 5–9. Counts are scored questions only. Your test form's curve may differ slightly.

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How many questions can you miss for each ACT composite?

For each composite from 20 to 36, this table shows the section scores that allow the most total misses while keeping every section within a point of the goal. The question totals are the scored questions on ACT's 2025 sample form: 40 English, 41 Math and 27 Reading, 108 in all.

Most scored questions you can miss, by target composite (enhanced ACT, 2025 sample form)
CompositeEnglishMathReadingTotal missesCorrect needed
3635: miss 236: miss 136: miss 03105 of 108
3535: miss 234: miss 435: miss 17101 of 108
3433: miss 334: miss 434: miss 2999 of 108
3333: miss 332: miss 634: miss 21197 of 108
3231: miss 432: miss 632: miss 31395 of 108
3131: miss 430: miss 832: miss 31593 of 108
3031: miss 429: miss 1030: miss 41890 of 108
2928: miss 628: miss 1130: miss 42187 of 108
2828: miss 627: miss 1328: miss 52484 of 108
2726: miss 826: miss 1428: miss 52781 of 108
2625: miss 926: miss 1426: miss 62979 of 108
2524: miss 1025: miss 1525: miss 73276 of 108
2423: miss 1124: miss 1624: miss 83573 of 108
2322: miss 1323: miss 1723: miss 93969 of 108
2221: miss 1422: miss 1822: miss 104266 of 108
2120: miss 1621: miss 1921: miss 114662 of 108
2020: miss 1619: miss 2220: miss 125058 of 108

How many questions can you miss in each section?

If you have a goal for one section, this is the most scored questions you can miss and still reach it. A number in brackets means that score doesn't exist on this form; the same raw score gives the next score up. For example, English jumps from 33 to 35, so a 34 goal needs the same 38 correct answers as a 35.

Most scored questions you can miss for each section score (enhanced ACT, 2025 sample form)
Section scoreEnglish (40)Math (41)Reading (27)Science (34)
360100
352211
342 (35)422
33352 (34)3
323 (33)634
31473 (32)5
304 (31)846
295104 (30)7
2861158
277135 (28)9
26814610
25915712
241016813
231117915
2213181016
2114191117
2016201218

Misses for a 36, 34, 30, 25 and 20

How many questions can you miss to get a 36 on the ACT?

About 3 scored questions, which means answering about 97% of the scored English, Math and Reading questions correctly. One split that works: English 35 (miss 2), Math 36 (miss 1) and Reading 36 (miss 0). A 36 in every section is stricter: you could miss only 1 scored Math question and nothing in English or Reading.

How many questions can you miss to get a 34 on the ACT?

About 9 scored questions, which means answering about 92% of the scored English, Math and Reading questions correctly. One split that works: English 33 (miss 3), Math 34 (miss 4) and Reading 34 (miss 2).

How many questions can you miss to get a 30 on the ACT?

About 18 scored questions, which means answering about 83% of the scored English, Math and Reading questions correctly. One split that works: English 31 (miss 4), Math 29 (miss 10) and Reading 30 (miss 4).

How many questions can you miss to get a 25 on the ACT?

About 32 scored questions, which means answering about 70% of the scored English, Math and Reading questions correctly. One split that works: English 24 (miss 10), Math 25 (miss 15) and Reading 25 (miss 7).

How many questions can you miss to get a 20 on the ACT?

About 50 scored questions, which means answering about 54% of the scored English, Math and Reading questions correctly. One split that works: English 20 (miss 16), Math 19 (miss 22) and Reading 20 (miss 12).

Why only scored questions count

Only scored questions affect your ACT score; field-test questions don't. Every enhanced ACT section includes unscored field-test questions that ACT uses to try out future items. On the 2025 sample form they were:

SectionQuestions on the testScoredUnscoredTime
English50401035 min
Mathematics4541450 min
Reading3627940 min
Science4034640 min

On test day you can't tell which questions are unscored, so answer all of them as if they count. There's no penalty for a wrong answer, so never leave a question blank. In practice, you can miss a few more questions than the tables show, as long as some of your misses land on unscored items. Don't plan around that luck.

How composite rounding gives you slack

Your composite is the average of your English, Math and Reading scores, rounded to the nearest whole number. Because three scores are averaged, the total only needs to reach three times your goal minus one. For a 36 that total is 107, so 36 + 36 + 35 still rounds up to 36. For a 30, it's 89: 30 + 30 + 29 averages 29.67 and rounds to 30.

That's why one section can sit a point below your goal at no cost. The calculator uses that point where a section's curve is most forgiving. In the 30 plan, Math drops to 29 because a Math 29 allows 2 more misses than a Math 30.

Science is separate. On the enhanced ACT, Science is optional on national test dates and isn't part of the composite. Colleges that want a Science score see it on its own line. See how the ACT composite is calculated.

Why the curve changes between tests

Each ACT form has its own raw-to-scale conversion table. ACT adjusts the table so a score means the same thing on an easier or harder form. On a harder form you may be able to miss one or two more questions for the same score; on an easier one, fewer.

The tables here use ACT's own scoring key for its 2025 enhanced practice form. That's the closest public guide to today's test, but use it as an estimate. When you take an official practice test, use the conversion table that comes with that form, or enter your raw scores in our ACT score calculator.

Older charts for the pre-2025 ACT don't apply. That test had 75 English, 60 Math, 40 Reading and 40 Science questions, all scored, and Science counted in the composite. Each enhanced ACT section has fewer scored questions, so each miss moves your score more.

Using your miss budget to study

A miss budget turns a vague goal into a number you can check after every practice test.

  1. Take a timed practice test and count your scored misses in each section.
  2. Compare them with your budget. If your goal is 30 and you're missing 16 in Math, you need to fix about 6 of those misses. If you're already inside the English budget, spend less time there.
  3. Sort each miss by cause: a content gap (a rule or formula you didn't know), a careless error, or running out of time. Each cause needs a different fix: review, slowing down and checking work, or pacing practice.
  4. Re-plan your split. If Math is your strongest section, raise it in the calculator and see how many extra misses that buys you in Reading.

With tight budgets (34 and up), most points are lost to careless errors and time pressure rather than unknown content. Below about 28, the biggest gains usually come from the most common question types. Our ACT math practice questions and ACT English practice questions show you which types you miss most.

Frequently asked questions

On ACT's 2025 sample form, about 3 scored questions across English, Math and Reading. For example, you could miss 2 in English and 1 in Math and get every Reading question right. The section scores 35, 36 and 36 add up to 107, which averages 35.67 and rounds to a 36 composite. To get a 36 in every section, you could miss only 1 scored Math question.

No. Every enhanced ACT section includes field-test questions that don't affect your score. On the 2025 sample form, 10 of 50 English questions, 4 of 45 Math, 9 of 36 Reading and 6 of 40 Science were unscored. You can't tell which questions they are on test day, so answer every question as if it counts.

No. Your raw score is the number of scored questions you answer correctly. A wrong answer and a blank cost the same, so guess rather than leave a question blank.

No. The enhanced ACT composite averages English, Math and Reading only. Science is optional on national test dates and is reported as its own score, so missed Science questions never change your composite.

Many charts were built for the older ACT, which had 75 English, 60 Math, 40 Reading and 40 Science questions, all scored, with Science in the composite. The enhanced ACT has fewer scored questions in each section, so each miss costs more. Curves also differ from one test form to the next, so treat any count as an estimate.

Official sources

Checked October 13, 2026:

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