Convert your 1520 SAT score to ACT equivalent and understand what it means for college admissions.
A composite SAT score of 1520 places you firmly in the 99th percentile. According to official concordance tables, an SAT 1520 is equivalent to about an ACT 34 on the 36-point scale (with a typical range of 33–35). In other words, scoring 1520 on the SAT should translate to around 33–35 on the ACT. Below we break down how a 1520 SAT maps to ACT section scores, and discuss what this means for college admissions and test choices.
You can double-check this estimate with our concordance calculator:
By concordance, an SAT 1520 converts to an ACT composite of about 34 (out of 36). Most concordance tables place a 1520 SAT in the 33–35 ACT range, with 34 being the most common equivalent. In practical terms, that means a 1520 SAT is roughly like scoring in the mid-30s on the ACT. Keep in mind these conversions are approximate — some colleges draw their own comparisons — but official tables give a solid guide. In short, a 1520 SAT ≈ 34 ACT.
Although SAT and ACT composite scores convert by table, it is useful to see how individual sections compare. Here is a rough breakdown if you scored 1520 total on the SAT:
| SAT Section | Approx. Score | ACT Equivalent |
|---|---|---|
| Math | ~760 | ACT Math ~34 |
| Reading and Writing | ~760 | ACT English ~34 / ACT Reading ~34 |
| (No Science) | — | ACT Science varies |
SAT Math (~760) → ACT Math ~34. Official SAT/ACT concordance shows that an SAT Math score around 760 corresponds to about 34 on the ACT Math section. For context, a perfect SAT Math 800 equals an ACT Math 36.
SAT Reading and Writing (~760) → ACT English + Reading ~34 each. The SAT combines Reading and Writing into one 800-point section, while the ACT separates them. Concordance tables show that an SAT Reading and Writing score around 760 maps to about 34 on both ACT English and ACT Reading sections.
SAT has no Science section → ACT Science varies. The SAT has no separate science section, while the ACT includes Science Reasoning. Since there is no SAT science score to convert from, your ACT Science score would depend entirely on your science reasoning abilities.
It is worth noting the digital SAT format (introduced in 2024) consists of exactly two sections: Reading and Writing combined (64 minutes, 54 questions) and Math (70 minutes, 44 questions). The digital SAT is adaptive (each section has two modules of varying difficulty) and fully computer-based. Overall, a 1520 SAT roughly translates to about 34 Math / 34 English / 34 Reading / variable Science on the ACT format.
Since the ACT includes a Science Reasoning section but the SAT does not, remember that your SAT composite of 1520 provides no direct guidance for ACT Science performance. The SAT instead weaves science-related questions into its regular Reading and Math sections. In practice, this means your ACT Science score will be determined by your ability to interpret graphs, charts, and scientific passages — skills that are not explicitly tested on the SAT. When converting from SAT to ACT, we can only estimate English, Reading, and Math scores. Science remains a wild card that could significantly impact your ACT composite.
With a 1520 SAT, you already have an outstanding score. It places you above 99% of test-takers, making you competitive at every university in the country. For most students, retaking the SAT is unnecessary.
However, if you are aiming for the absolute top-tier schools (where 75th percentile SAT scores are 1550–1600), you could consider a retake. Only do this if you believe you can boost your score with reasonable effort.
What about taking the ACT? Many students double up and sit for both, but it is optional. If you have access to practice, try a full-length ACT practice test to see how you score. The advice from test prep pros is to take a timed full-length practice test of each type and compare results.
For example, if you prefer having more time per question (the SAT offers 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. Conversely, if you are quick at processing information, enjoy science reasoning, or find the ACT's straightforward question style more appealing, you might prefer the ACT.
A 1520 SAT gives you access to virtually all colleges. At state flagships and large public universities, a 1520 is well above the middle of admitted students. For example, public universities like the University of Michigan or University of Virginia often report mid-50% SAT ranges that include the upper 1300s to mid-1500s, so a 1520 would make you an exceptional applicant.
Even at Ivy League and other highly selective schools, 1520 is within or above their middle 50%. For instance, Harvard University's admitted SAT range is about 1460–1580, and Stanford's is 1470–1590. That means a 1520 is comfortably within their typical range. Northwestern University's mid-50% is roughly 1440–1550, so 1520 is above the middle there. In general, with a 1520 you could expect to be a strong applicant at essentially every school in the country.
Moreover, virtually all colleges and universities would consider a 1520 SAT an exceptional score. Many merit scholarships become available. In practical terms, you should include a mix of reach, match, and safety schools — but with a 1520, your "safety" schools will be very solid programs. Do not count any college out solely because of your score; a 1520 SAT makes you eligible at essentially every college in the country.
If you are considering whether to stick with the SAT or switch to the ACT (or vice versa), it helps to compare the tests.
| 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).
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.
The SAT offers free official practice via Khan Academy, including 7 full-length practice tests. The ACT has fewer free resources on its site. Both tests are accepted at all colleges that require standardized tests. No college inherently favors one over the other.
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. Since you already have a 1520 SAT, you are clearly talented on standardized tests. If you do take the ACT, aim to beat that 34 equivalency — if not, remember the 1520 SAT stands strong on its own.
If you decide to take the ACT after scoring 1520 on the SAT, here are some key strategies to maximize your performance:
Since the ACT Science section is completely new territory for SAT test-takers, focus heavily on this section. Practice interpreting graphs, charts, and scientific data. The Science section tests your ability to analyze information quickly rather than your knowledge of specific scientific facts.
The ACT's faster pace (about 57 seconds per question) requires different strategies than the SAT. Practice working quickly while maintaining accuracy.
Unlike the SAT's built-in calculator, you will need to bring your own to the ACT. Make sure you are comfortable with your calculator model and know which functions are allowed.
ACT Reading passages are longer with more questions per passage. Develop strategies for quickly identifying main ideas and supporting details. Practice skimming techniques to save time.
ACT English focuses heavily on grammar rules and sentence structure. Review common grammar concepts and practice identifying errors quickly.