Is 18 a Good ACT Score?
An 18 ACT composite is at the 52nd percentile of ACT takers and matches a 970 SAT (960 to 980): right at the middle ACT taker, though 1.2 points under the 19.2 national average, so it is an average score with room to grow.
- ACT takers
- 52nd
- percentile, 52 in 100 at or below
- Against the 19.2 average
- -1.2
- national average, class of 2026
- SAT match
- 970
- 960 to 980 on the concordance
- Section points to 19
- +3
- sections must add up to 56
What an 18 ACT score means
An 18 is the middle of ACT takers: 52 in 100 score 18 or lower. ACT's national average is higher, 19.2, because a long tail of top scores pulls the mean up past the median.
On the enhanced ACT the composite is the average of English, Math and Reading, rounded with halves up, so an 18 needs section scores that add up to at least 53 and at most 55. One point down, a 17 is at the 47th percentile; one point up, a 19 is at the 58th.
How 18 compares with other ACT scores
ACT reports one national rank per composite: the share of recent graduates who tested and scored at or below it. ACT's national average composite was 19.2 for the class of 2026; an 18 is 1.2 points below it.
| Composite | What it marks | Percentile | SAT match | Points from 18 |
|---|---|---|---|---|
| 18 (you) | Your score | 52% | 970 | |
| 23 | Top quarter of ACT takers starts | 77% | 1140 | +5 |
| 28 | Top 10 percent of ACT takers starts | 91% | 1310 | +10 |
| 33 | Top 2 percent of ACT takers | 98% | 1460 | +15 |
| 36 | Perfect composite | 100% | 1590 | +18 |
Ranks: ACT, National Ranks for ACT test scores (Composite), checked Oct 17, 2026. SAT match: ACT and College Board, 2018 ACT/SAT Concordance Tables.
On the SAT, an 18 matches 960 to 980, with 970 as the single value ACT prints beside it. See the 18 row on the ACT to SAT conversion chart or see whether 970 is a good SAT score.
What it takes to go from 18 to 19
To move from 18 to 19, your three section scores must add up to 56 instead of 53: 3 section points in any section. On ACT's National Online Practice Test 2, an 18 on all three sections takes 21 English, 20 Math and 14 Reading answers, 55 of 108; 19 on all three takes 59, about 4 more.
| Section | For 18 | For 19 | More |
|---|---|---|---|
| English | 21 of 40 | 22 of 40 | +1 |
| Math | 20 of 41 | 22 of 41 | +2 |
| Reading | 14 of 27 | 15 of 27 | +1 |
Table: ACT, National Online Practice Test 2 Scoring Key, 2026, checked Oct 17, 2026. Every test form has its own table, so your count on test day can differ by a question or two.
The next line after that is 20 (above the national average of 19.2), which takes 61 right answers on the same form. The ACT score calculator shows how far your own sections sit from the next composite; ACT superscores across test dates, and many colleges use the superscore.
Is 18 enough for your colleges?
That depends on the college, so we list no admission ranges. Section C9 of each college's Common Data Set gives the 25th and 75th percentile ACT composites of its enrolled first-year students: at or above the 75th, an 18 is a strength; under the 25th it trails most students, and at a test optional college you can leave it off. Some merit scholarships publish ACT minimums on the college's own aid page, and National Merit uses the PSAT/NMSQT, not the ACT (see what a good PSAT score is).
Where the 18 numbers come from
Ranks: ACT, National Ranks for ACT test scores (Composite), checked Oct 17, 2026. National average: ACT, Graduating Class 2026 national profile, checked Oct 23, 2026. SAT match: ACT and College Board, 2018 ACT/SAT Concordance Tables. Right answer counts: ACT, National Online Practice Test 2 Scoring Key, 2026, checked Oct 17, 2026.
The guide to a good ACT score reads the same files. Official scores come only from ACT.
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Is 18 a good ACT score?
An 18 ACT composite is at the 52nd percentile of ACT takers and matches a 970 SAT (960 to 980): right at the middle ACT taker, though 1.2 points under the 19.2 national average, so it is an average score with room to grow. Whether it is good for you depends on the colleges on your list.
What percentile is an 18 on the ACT?
The 52nd percentile on ACT's national ranks for 2024 to 2026 graduates: 52 in 100 test takers scored 18 or lower. A 17 is the 47th. A 19 is the 58th.
18 ACT to SAT: what does it equal?
960 to 980, with 970 as the single value, on the official 2018 ACT and College Board concordance. It says the two scores carry the same weight; it does not predict an SAT score.
How do I raise an 18 to a 19?
Add 3 section points across English, Math and Reading, so they total 56. On ACT's Practice Test 2 that is about 4 more right answers (59 of 108 instead of 55). Work on your weakest section first.
Should I retake the ACT with an 18?
Usually yes if your colleges report higher scores in their Common Data Set. 19.2 is the national average and 23 starts the top quarter, 5 points up. Find your weakest section with a practice test before the next date.
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