Free, adaptive SAT Math practice that runs entirely in your browser. No account, no server, no tracking, no ads — one HTML file.
Open it → https://echa920.github.io/sat-math-lab/
- 400 SAT-format Math questions, every one with a worked explanation and a Desmos shortcut. Filter by domain, difficulty, unseen-only, or "retry my misses".
- Adaptive exams — two modules, like the real digital SAT. How you do on module 1 decides whether module 2 gets harder or easier. Finishes with a Math score estimate and a per-question breakdown.
- Mistake log — every miss files itself with one tap, then you redo it from scratch and mark it defeated.
- Accuracy by domain, so you drill the domain that's actually costing you points.
- Formula drill — 16 cards that repeat on every SAT.
- Built-in Desmos graphing calculator (press
D) — the same one inside Bluebook. - Focus timer with cooling breaks, and XP/levels for doing real practice.
- The 400 questions are original, written in the SAT format. They are not real College Board items and no real SAT questions are reproduced here. For actual released questions use the free official Student Question Bank and Bluebook.
- Score estimates are rough approximations of College Board's scaling, not official scores.
- This covers Math only. Reading & Writing links are on the Resources page.
- Progress is stored in your browser's localStorage. Clearing your browsing data clears your progress, and it doesn't follow you to another device — use Settings → Export for a backup.
Not affiliated with or endorsed by the College Board. SAT is a trademark of the College Board.