An AP Precalculus practice test is the fastest way to see what needs work before you spend money. The free test gives you 25 original questions with explanations, built from the official units and weights. That makes it useful early, but it is not a full exam.
After you spot weak units, you can patch them with the $5 AP Precalculus study guide, a 32-page printable PDF with 182 key terms, 40 practice questions, and a 2-page cram sheet. If you want timed practice and scoring guides, step up to the prep course. This post shows what each free tool does well, where it falls short, and what to buy next, if anything.
What the free tools do, and what they do not
The two free tools help in different ways. The practice test checks your understanding with 25 original questions. The score calculator turns raw points into an estimated AP score from 1 to 5. Both are useful, but neither replaces a full timed exam.
| Tool | Cost | What it gives you |
|---|---|---|
| AP Precalculus practice test | Free | 25 original questions that follow the official units and weights, every answer explained; a free account shows your score |
| AP Precalculus score calculator | Free | Enter raw points per section to see an estimated 1-5 score (not an official conversion) |
| 10 sample questions | Free | On the study guide page |
| AP Precalculus study guide | $5 | 32-page PDF, 40 practice questions, cram sheet |
| AP Precalculus prep course | $19 | Lessons, quizzes, interactive labs and 2 full exams with written parts and scoring guides |
Use the table above as a quick filter. If you have not started studying yet, begin with the free practice test. It follows the official course units and weights, and every question has an explanation. That makes it good for finding weak spots fast. You can make a free account to see your score and explanations.
The score calculator is different. It does not teach content. It works best after you already have raw points from a full timed exam with a scoring guide. That matters because AP Precalculus has four scored parts, not just one multiple choice number. For the May 2027 exam, the official materials show 29 no-calculator multiple choice questions, 13 graphing-calculator multiple choice questions, 2 graphing-calculator free-response tasks, and 2 no-calculator free-response tasks. The calculator can estimate a 1 to 5 from those raw points, but it is still an estimate, not an official conversion.
So, use the free practice test to diagnose. Use the score calculator to estimate. Use paid prep only when you know what problem you are trying to fix.
How to use the AP Precalculus practice test early
Take the free practice test before you feel ready. That sounds backward, but it saves time. Since the test has 25 questions with explanations, it gives you a quick read on where you miss points without asking for a full exam block.
Start by taking it under light time pressure. Do not stop after every question to look things up. Finish first, then read every explanation, even for the ones you got right. Your goal is not a brag score. Your goal is a map.
Now sort your misses by unit. AP Precalculus puts most of its weight on three areas, and the ranges matter:
| Section | Questions or tasks | Share of score |
|---|---|---|
| Multiple choice, Part A (no calculator) | 29 questions | 43.75% |
| Multiple choice, Part B (graphing calculator) | 13 questions | 18.75% |
| Free response, Part A (graphing calculator) | 2 tasks | 18.75% |
| Free response, Part B (no calculator) | 2 tasks | 18.75% |
The table shows why some misses matter more than others. Polynomial and Rational Functions carries 30% to 40% of the exam. Exponential and Logarithmic Functions carries 25% to 40%. Trigonometric and Polar Functions carries 30% to 35%. If you miss several questions in one of those areas, that is not a small leak.
This is the point where the $5 study guide helps. The guide is organized one chapter per official unit, heaviest-weighted first. That makes it easy to go straight to the unit that hurt you most. You also get 10 free sample questions on the guide page, so you can inspect the style before you buy.
If your misses are scattered and small, the guide may be enough. If your misses show larger gaps, especially in free-response style reasoning, you may need the course instead.
The AP Precalculus study guide: $5, instant PDF
32 printable pages built from the official units, heaviest first: 182 key terms with examples, 40 practice questions with every answer explained, a 2-page cram sheet and 2-, 4- and 8-week study plans. Try 10 free sample questions on the page first.
See the AP Precalculus guide →When the $5 guide is enough
The $5 AP Precalculus study guide makes sense when you know the content, but you need cleaner recall and better focus. It is a one-time purchase, instant download, and it is a printable PDF of 32 pages. That matters if you study better on paper.
Here is what you are paying for, in plain terms. You get one chapter per official unit, with the heaviest-weighted units first. You get 182 key terms, each with an example, so the vocabulary is tied to actual math. You get 40 practice questions with every answer explained. You also get common exam traps flagged, a 2-page cram sheet for the night before, and 2-, 4-, and 8-week study plans built from the exam weights.
That is a good fit if the free practice test showed clear weak units and you mostly need review, not a long program. It is also the cheapest way to move from diagnosis to action, because $5 is much easier to test than $19.
There are limits, though. The guide is not a full course. It does not give you a timed final practice exam and a final exam with written parts and scoring guides. If you want those, go to the $19 AP Precalculus prep course.
If you are still deciding what kind of prep fits you, the AP prep hub helps you compare your options without guessing.
When the $19 course is the better buy
Buy the $19 prep course when your problem is not just recall. The course is better when you need more reps, more structure, and practice that looks more like exam day.
The course has 12 chapters, 69 lessons, 71 quizzes, and 22 interactive labs. More important than the counts, it includes a timed final practice exam and a final exam, and each has a written part and a scoring guide. That is the big reason the course pairs well with the free score calculator. The calculator works best when you can enter raw points from a full timed exam with a scoring guide, and this course gives you two of those.
That is also why the course is often the better buy than stacking small fixes. The guide costs $5. The course costs $19. Together, that is $24. If you already know you need full timed practice, the extra $14 over the guide alone buys a lot more structure.
One more detail matters: this course is built for the May 2027 exam. The official materials show the new 29 plus 13 multiple-choice setup effective starting with the May 2027 exam. The May 2026 exam used 28 plus 12 multiple-choice questions with the same weights. If you want prep shaped to the current format, that is a good reason to pick the course.
If you want a wider road map before buying, this post can help too: Precalculus Course: A Roadmap for Getting Ready.
How to use the score calculator without fooling yourself
The free AP score calculator is helpful, but only if you treat it the right way. It gives an estimated 1 to 5 score from your raw points per section. It does not give an official conversion, and it does not grade your written work for you.
That means the calculator is strongest after a full timed exam. AP Precalculus uses four scored parts: multiple choice Part A, multiple choice Part B, free response Part A, and free response Part B. Their score shares are 43.75%, 18.75%, 18.75%, and 18.75%. If your raw points come from a short quiz, or from a mixed set where you skipped timing, the estimate gets weaker.
A better method is simple. First, take a full timed exam with a scoring guide. Second, score each part honestly. Third, enter those raw points into the calculator. Fourth, look past the estimated number and ask where the points were lost. Did you lose most of them in no-calculator multiple choice, graphing-calculator multiple choice, graphing-calculator free response, or no-calculator free response?
If you need a source for those raw points, the $19 prep course is the cleanest option because it includes two finals, each with a written part and a scoring guide. If you are still at the review stage, start cheaper with the printable guide, then come back to the calculator after stronger practice.
Remember one last thing. AP exams are given once a year, in the first two weeks of May. Use estimates to plan your prep, not to make promises to yourself.
Frequently Asked Questions about AP Precalculus Prep
No. It has 25 original questions with explanations, built from the official units and weights. That makes it a good early check, but it is not a full timed AP Precalculus exam with every section.
Start with the practice test to find weak units. Review those weak areas with the $5 guide or the $19 course. Then use the score calculator after a full timed exam with a scoring guide, because that gives a better estimate.
Buy the guide when you mostly need review. It gives you 32 printable pages, 182 key terms with examples, 40 practice questions, a cram sheet, and study plans. Buy the course when you need more structure and timed finals.
No. It gives an estimated 1 to 5 score based on the raw points you enter for each section. It is useful for planning, but it is not an official conversion and it depends on the quality of your raw scores.
Maybe, but that is your college's decision. Each college sets its own AP credit policy, including the score it needs and the credit it gives. Check your college before you plan around credit.
It depends on how many AP subjects you need. AP Monthly is $29 a month and AP Lifetime is $149 once, and both include all 42 AP study guides and 36 AP prep courses. If you only need AP Precalculus, buying the $5 guide and the $19 course separately costs $24. If you need more than one AP subject, an AP plan may cost less.
Final Thoughts on AP Precalculus Prep
If you want the lowest-cost next step, start with the $5 AP Precalculus study guide after you take the free practice test. It is a smart buy when your misses point to a few weak units. If you need timed finals, written parts, and scoring guides so the score calculator means more, go with the $19 AP Precalculus prep course. The free tools help you decide, not guess. Take the practice test first, review your weak areas, and then pick the smallest product that fixes the actual problem.
Start your AP Precalculus prep today
$5 study guide · $19 prep course · AP Monthly $29 a month (every AP guide and 36 AP prep courses)