Convert your 31 ACT score to SAT equivalent and understand what it means for college admissions.
A 31 on the ACT represents an outstanding achievement - you have scored in the 95th percentile nationally. According to official concordance tables, an ACT 31 converts to approximately an SAT 1400 on the 1600 scale (typically ranging from 1390-1410). This means your 31 ACT should translate to roughly 1390-1410 on the SAT. We will break down how a 31 ACT maps to specific SAT section scores and explore the implications for college admissions and test strategy.
Verify this conversion using our concordance calculator:
Based on concordance data, an ACT 31 converts to an SAT composite of approximately 1400 (out of 1600). Multiple sources confirm this range: concordance tables consistently place a 31 ACT within the 1390-1410 SAT range. In practical terms, a 31 ACT equates to scoring in the high 1300s to low 1400s on the SAT. While these conversions serve as estimates - some institutions develop their own comparisons - official tables provide reliable guidance. Simply put, a 31 ACT ≈ 1400 SAT.
While ACT and SAT composite scores convert through concordance tables, examining individual section comparisons proves valuable. Here is an approximate breakdown assuming you scored 31/36 in each ACT section:
| ACT Section | ACT Score | SAT Equivalent |
|---|---|---|
| Math | 31 | SAT Math ~700 |
| English + Reading | 31 + 31 | SAT Reading and Writing ~680 |
| Science | 31 | No SAT equivalent |
ACT Math (31) → SAT Math ~700/800. Official ACT/SAT concordance indicates that an ACT Math score of 31 corresponds to approximately 700 on the SAT Math section. (For reference, a perfect ACT Math 36 equals an 800 SAT Math.)
ACT English (31) + Reading (31) → SAT Reading and Writing ~680/800. The SAT combines Reading and Writing into a single score out of 800. Concordance tables for the sum of ACT English+Reading demonstrate that a combined score of 62 (31+31) maps to about 680 on SAT Reading and Writing. In other words, if you scored 31 on both English and Reading, you would anticipate roughly a 670-690 combined score in SAT Reading/Writing.
ACT Science (31) → no direct SAT equivalent. The ACT's Science section remains unique; the SAT lacks a separate science section. (The SAT incorporates science reasoning into its Reading and Math questions, eliminating any standalone "science score.")
Note that the digital SAT format (launched in 2024) comprises precisely two sections: Reading and Writing combined (64 minutes, 54 questions) and Math (70 minutes, 44 questions). The digital SAT features adaptive testing (each section contains two modules of varying difficulty) and operates entirely on computer. Overall, a 31 ACT roughly converts to about 700 Math / 680 Reading and Writing (1380 combined) on the current SAT format.
Given that the ACT includes a Science Reasoning section while the SAT does not, remember that your ACT composite of 31 excludes science when converting to the SAT. The SAT instead integrates science-related questions into its standard Reading and Math sections. In practice, this means your ACT Science score (even if 31) lacks a separate SAT equivalent. When comparing to SAT, we only consider ACT English, Reading, and Math scores. This explains why we focused on English+Reading → Reading and Writing, and Math → Math.
With a 31 ACT, you possess an excellent score. It places you above 95% of test-takers, making you competitive at most universities nationwide. For many students, retaking the ACT may not be necessary.
However, if you are targeting the most selective schools (where 75th percentile ACT scores reach 34-35), you might consider a retake. Only pursue this if you believe you can improve your score with reasonable effort and additional preparation.
What about taking the SAT? Many students attempt both tests, but it is optional. If you have access to practice materials, try a digital SAT practice test to gauge your performance.
Test prep professionals recommend to "take a timed full-length practice test of each type" and compare results. Some students discover they perform slightly better on one format.
For instance, if you prefer having more time per question (the SAT provides about 41-44% more time per question than the ACT) or you are more comfortable with the SAT's built-in formulas and calculator on all math problems, you might lean toward the SAT.
A 31 ACT grants you access to a wide range of colleges. At state flagships and large public universities, a 31 typically falls above or near the middle of admitted students. For example, public universities like the University of Michigan or University of Virginia often report mid-50% ACT ranges that include the upper 20s to low 30s, so a 31 would make you very competitive. Similarly, many private universities have comparable ranges.
Even some Ivy League and other highly selective schools list 31 in their middle 50%. For instance, Cornell University's admitted ACT range is about 33-35, and Dartmouth's is 33-35. That means a 31 falls just below their typical range. (Harvard and Stanford tend to have higher ranges, around 34-36, so a 31 is below their 25th percentile.) Another example: Georgetown University's mid-50% is roughly 31-35, so 31 sits at the lower end there. In general, with a 31 you could expect to be a competitive applicant at most top-50 schools.
Moreover, virtually all less-selective colleges and universities would consider a 31 ACT an excellent score. Many merit scholarships become available. And of course, public honors programs and state flagships routinely admit students in this range.
In practical terms, you should include a mix of reach, match, and safety schools - but with a 31, your "safety" schools will be very solid programs. Do not count any college out solely because of your score; a 31 ACT makes you eligible at essentially every college in the country.
If you are considering whether to stick with the ACT or switch to the SAT (or vice versa), it helps to compare the tests. Here are some key tradeoffs and facts:
| Feature | SAT | ACT |
|---|---|---|
| Duration | 2 hr 14 min | 2 hr 55 min (no essay) |
| Sections | Reading/Writing, Math | English, Math, Reading, Science |
| Questions | ~98 | ~131 |
| Time per Question | ~82 sec | ~57 sec |
| Calculator | Built-in app + formula sheet | Bring your own, no formula sheet |
| Scoring | 400-1600 | 1-36 composite |
| Science | Embedded in other sections | Dedicated section |
The digital SAT is 2 hours 14 minutes total, with two sections (Reading/Writing and Math). The ACT is longer, about 2 hours 55 minutes, and has four sections (English, Math, Reading, Science). Because the SAT has fewer questions overall (~98) and more time, you get roughly 40% more time per question on the SAT. The ACT is more intense time-wise (131 questions in 125 min, about 57 seconds per question). If you find timing stressful, the SAT's longer per-question time can be a big advantage.
SAT reading passages tend to be shorter and each passage has only 1-2 questions. On the ACT, passages are longer and each passage has about 9 questions. Some students find the SAT's short passages less overwhelming, while others prefer fewer longer passages on the ACT.
On the SAT Math section, you get a built-in graphing calculator app and all necessary math formulas on-screen. On the ACT, you must bring your own calculator and only certain models are allowed; no formula sheet is provided. If you rely heavily on a calculator or the SAT formula sheet, you might prefer the SAT.
In short, neither test is "harder" overall, but differences exist. The SAT rewards careful pacing, math formula knowledge, and strong vocabulary. The ACT rewards quick work, strong science-reading skills, and comfort with its specific question styles. Many counselors advise trying both if possible. Since you already have a 31 ACT, you are clearly talented on standardized tests. If you do take the SAT, aim to beat that 1400 equivalency - if not, remember the 31 ACT stands strong on its own.