You can take a full-length SAT Math practice test for free with no credit card in three places. Bluebook has 8 official tests. Sigma Prep has one full-length Math test, a 12-question diagnostic, and a custom practice set built from the questions you miss on the test. Khan Academy has practice and lessons but sends you to Bluebook for full tests. Here is exactly what each free option includes and where the card is required, as of September 2026.
| Free without a card | What it includes | Where payment starts | |
|---|---|---|---|
| Bluebook (College Board) | Yes, 8 tests | Full-length, both sections, official scoring, answer key and short rationales | Never |
| Sigma Prep | Yes, 1 full-length Math test plus the diagnostic | Two-module adaptive Math test, 200 to 800 estimate, breakdown by domain, video on every question, and a custom practice set built from your misses | Tests 2 to 24 and the full bank, $49 per month |
| Khan Academy | Yes, practice and lessons | Topic practice, video lessons, both sections | Never; full tests are in Bluebook |
What the free Sigma Prep test includes
Practice Test 4, mirrored question for question on official Practice Test 4 with fresh problems, timed, two adaptive modules, Desmos built in. At the end you get an estimated score range, a breakdown by domain, a video explanation on every question, and a custom practice set built from the questions you missed: same skills, new problems. A free account, no payment method.
What is not free
The other 23 Sigma Prep tests and the 7,000-problem bank are part of the $49 per month subscription, which has a 14-day money-back guarantee. We say this plainly because pages that promise "free" and then ask for a card are the reason this question gets asked.
The order that makes sense
- Bluebook test, for the official number.
- Sigma Prep diagnostic, twelve questions in fifteen minutes, then a free account to see your weak topics.
- Free Sigma Prep Test 4, to get the video review and the miss-based practice set.
- More Bluebook tests as you go, saving two for the final weeks.
Try the free diagnostic, twelve real SAT Math questions, no card, or take the free full-length practice test with a free account.