If you left the calculator at home, you can still sit Math. ACT does not require one. Do not drive home and miss the door. Borrow only if staff allow it before the room starts.
How to sit without it
Arithmetic by hand, skip calculator-only items, guess and move. You practiced some no-calc work if you followed: what to bring.
The bottom line
Sit the test. A missing calculator is a slower Math section, not an automatic void.
Start practicing
Start with a free diagnostic, then drill your weak spots with 15-question quizzes and track how you're doing across Reading, English, and Math. Compare plans whenever you're ready to go further.
This article offers general ACT prep guidance. The ACT can change from year to year, including its format, scoring, policies, test dates, and fees, so always confirm the latest details on the official ACT website at act.org before you make decisions. ACT® is a registered trademark of ACT, Inc. thirty-six is not affiliated with, endorsed by, or sponsored by ACT.