SAT vs. ACT: Which Test Is Right for You?

ACT rolled out its enhanced format on national online tests starting in April 2025 and moved all national testing, paper and online, to it starting in September 2025. The big changes:

• Shorter: the required core test is 131 questions in 2 hours 5 minutes, versus 2 hours 55 minutes for the legacy test with its required science section. ACT describes the change as up to 84 fewer questions and 50 fewer minutes.
• Science is optional. Your 1–36 composite is now the average of English, Math, and Reading only. Take Science and you also get a STEM score.
• Four answer choices in Math, down from five.

That makes the two tests closer than ever in length. The real differences now are pace, adaptivity, and content emphasis. For the ACT side in detail, see our ACT guide.

1. Speed

This is the biggest one. The SAT gives you more time per question in every section. ACT English moves at about 42 seconds per question, and ACT Reading packs 36 questions onto longer passages in 40 minutes. If you run out of time on timed tests, that points toward the SAT.

2. Reading style

SAT Reading and Writing is 54 bite-size passages, each with one question. ACT Reading is longer passages with several questions each. Some students like settling into one text; others lose focus on long passages. Your practice test results will tell you which you are.

3. Math emphasis

SAT Math leans hard on algebra: Algebra and Advanced Math together are about 70% of the section, and about a quarter of the questions make you type your own answer. The ACT spreads its math across number and quantity, algebra, functions, geometry, and statistics and probability, all multiple-choice. Strong in algebra and like graphing? The SAT tends to fit. Broad math background and quick with geometry? The ACT can play to that.

4. Adaptivity

The SAT adjusts Module 2's difficulty based on Module 1, so the second half feels harder if you're doing well. The ACT isn't adaptive: the questions don't change based on how you're doing, so difficulty doesn't ramp up in response to your answers. Neither is easier. It's a matter of what feels less stressful to you.

5. Science

The SAT has no science section, though some Reading and Writing and Math questions use science contexts. On the ACT, Science is an optional add-on. Check whether any college on your list asks for it, and whether a STEM score would help a STEM-focused application.

6. Paper vs. screen

The SAT is digital for nearly everyone. The ACT is offered on paper or online depending on the test center. If you strongly prefer paper, that's a real point for the ACT.

U.S. colleges that use test scores generally accept the SAT and the ACT interchangeably, so pick the test you'll score better on. What does differ by college is whether scores are required, optional, or not considered, and whether they superscore (combine your best section scores across dates). Check each college's admissions page for its current policy.

Don't split your prep between both tests. Once you've picked, focused practice on one format beats half-prep on two.

• Take one of our two free full-length SAT practice tests or the full-length ACT practice tests.
• See the 2026–27 SAT dates and ACT dates.
• Read the SAT overview for scoring, fees, and fee waivers.