| Feature | ACT | SAT |
|---|---|---|
| Sections | English, Math, Reading, Science, Writing (optional) | Reading, Writing & Language, Math, Essay (optional — rarely used now) |
| Time | 2 hrs 55 min (plus 40 min optional writing) | 2 hrs 14 min (no essay) |
| Math Content | Algebra, Geometry, Trig | Algebra, Advanced Math, some Trig |
| Science Section | Yes | No |
| Scoring | 1–36 per section, average = composite score | 200–800 per section, total = 400–1600 |
| Best for | Strong readers, fast test-takers, science lovers | Strong math & reading skills, good at puzzles and problem-solving |
| Where to Register | act.org | collegeboard.org |