ASVAB test format: 135 questions and 197 minutes on computer, 225 and 149 on paper
What you face on test day: how many questions each version has, how long each subtest allows, and what is on it.
- Computer (CAT-ASVAB): 135 scored questions · 197 minutes of time limits
- Paper and pencil: 225 questions · 149 minutes
- Calculator: not allowed — "You cannot use a calculator when taking the ASVAB."
How many questions are on the ASVAB?
The computer test has 135 scored questions. The paper test has 225 questions. The difference is not a harder or easier test: the computer version is adaptive, so it needs fewer questions per subtest to place you, and the paper version combines Auto Information and Shop Information into one subtest.
Those counts are the scored questions only. The proctored computer test can also include "tryout" questions — new items that do not count toward your score — in two to four of the subtests. Each examinee receives tryout questions in 2 to 4 of the ASVAB subtests, with tryout questions randomly dispersed throughout each of the selected subtests. Extra time is given to complete a subtest when tryout questions are administered.
If you have seen other counts quoted, the likely reasons are that they describe the paper version, count tryout questions, or predate the current form. The official table is the one reproduced below, and each row links to the study guide section or the single-subtest page for that subject.
Questions and time limits, subtest by subtest
Rows follow the order subtests are administered. The computer and paper columns come from the two official tables; "—" means the subtest does not exist in that format.
| Subtest | Domain | What it tests | CAT: scored / time | Paper: questions / time |
|---|---|---|---|---|
| GS General Science | Science and Technical | Knowledge of physical and biological sciences | 15 / 12 min | 25 / 11 min |
| AR Arithmetic Reasoning | Math | Ability to solve arithmetic word problems | 15 / 55 min | 30 / 36 min |
| WK Word Knowledge | Verbal | Ability to select the correct meaning of words presented in context and to identify the best synonym for a given word | 15 / 9 min | 35 / 11 min |
| PC Paragraph Comprehension | Verbal | Ability to obtain information from written passages | 10 / 27 min | 15 / 13 min |
| MK Mathematics Knowledge | Math | Knowledge of high school mathematics principles | 15 / 31 min | 25 / 24 min |
| EI Electronics Information | Science and Technical | Knowledge of electricity and electronics | 15 / 10 min | 20 / 9 min |
| AI Auto Information | Science and Technical | Knowledge of automobile technology | 10 / 7 min | — (combined in AS) |
| SI Shop Information | Science and Technical | Knowledge of tools and shop terminology and practices | 10 / 6 min | — (combined in AS) |
| AS Auto & Shop Information | Science and Technical | Auto and shop information: AI and SI combined into one paper-and-pencil subtest; the combined AS score is reported for both formats | — (AI + SI) | 25 / 11 min |
| MC Mechanical Comprehension | Science and Technical | Knowledge of mechanical and physical principles | 15 / 22 min | 25 / 19 min |
| AO Assembling Objects | Spatial | Ability to determine how an object will look when its parts are put together | 15 / 18 min | 25 / 15 min |
Source: What to Expect When You Take the ASVAB (officialasvab.com), checked 2026-11-12. AI and SI are administered as separate subtests in the computer administration but combined into one single score (labeled AS). AI and SI are combined into one single subtest (AS) in the paper-and-pencil administration. Scores on the combined subtest (AS) are reported for both the computer and paper-and-pencil administration.
Tryout questions add time, not points
Tryout questions are the reason two people can sit the same computer test for different lengths of time. The official table prints a second time limit for every subtest, the one that applies when tryout questions are included. The extra time is substantial on the verbal and arithmetic subtests, less so on the short ones.
| Subtest | Scored questions | Possible tryout questions | Time without tryout | Time with tryout |
|---|---|---|---|---|
| GS General Science | 15 | 15 | 12 min | 25 min |
| AR Arithmetic Reasoning | 15 | 15 | 55 min | 113 min |
| WK Word Knowledge | 15 | 15 | 9 min | 18 min |
| PC Paragraph Comprehension | 10 | 15 | 27 min | 75 min |
| MK Mathematics Knowledge | 15 | 15 | 31 min | 65 min |
| EI Electronics Information | 15 | 15 | 10 min | 21 min |
| AI Auto Information | 10 | 15 | 7 min | 18 min |
| SI Shop Information | 10 | 15 | 6 min | 17 min |
| MC Mechanical Comprehension | 15 | 15 | 22 min | 42 min |
| AO Assembling Objects | 15 | 15 | 18 min | 38 min |
| Total | 135 | 150 (not all administered) | 197 min | up to 432 min if every subtest had tryouts |
Tryout questions are administered in 2 to 4 subtests per examinee, never all ten, so the "with tryout" total is an upper bound, not a schedule. Scored questions never change.
Computer test versus paper test
The two versions report the same scores, but the experience differs in ways the official page spells out. For planning the day: "On average, it takes about 2 hours to complete the proctored CAT-ASVAB." For paper, "The total time required, including administrative tasks and instructions, is 3 to 4 hours." The 197-minute figure above is the sum of the ten subtest limits, not a stopwatch reading.
- Routing. The computer version of the ASVAB, called the CAT-ASVAB, is an adaptive test. This means that the test adapts to the ability level of each individual examinee. A shorter test is possible because the items are chosen as you go.
- Pace. Each examinee completes the test at his/her own pace. That is, when you complete a subtest, you can immediately move on to the next subtest without waiting for everyone else in the testing room to finish.
- Going back. On paper, the official rules read: "Once you complete the questions in a subtest, you will be able to review your answers. However, you will not be able to go back to an earlier subtest or proceed to the next subtest until instructed."
- Subtest count. AI and SI are separate on the computer test and combined as AS on paper; Assembling Objects exists in both.
The unproctored at-home option, the PiCAT, is a third mode: no per-subtest time limits and no tryout items, followed by a short verification test at a MEPS or MET site before the scores count for enlistment.
Can you use a calculator on the ASVAB?
No. The official page states it directly: "You cannot use a calculator when taking the ASVAB." The official FAQ explains why: the ASVAB is an employment test, not an achievement test. It asks whether you can apply math principles to problems you would meet on the job, and doing that without a calculator may be part of the job itself.
That rule shapes preparation more than any other single fact on this page. Arithmetic Reasoning gets 220 seconds per question on the computer test, Mathematics Knowledge 124, and Word Knowledge only 36; the subtest that rewards written working is also the one with the most generous clock. Practise mental arithmetic and estimation, and check units by hand.
Is the ASVAB hard?
There is no published difficulty rating, and the test is not pass/fail. What can be said from the official numbers is this: the computer test adapts to your ability, so the questions get harder while you keep answering correctly and easier when you miss; every subtest is scored on a norm-referenced scale rather than as a percentage correct; and the AFQT that decides enlistment eligibility is computed from four of the ten subtests (AR, MK, WK, PC), not from all of them. Half of the 1997 national sample sits at or below AFQT 50 by construction, so an average score is the middle of the scale, not a failing grade — the average score page shows what recruits actually score and the score chart prints the full conversion table.
The practical answer is that difficulty lives in the arithmetic subtests: they carry the largest time allocations and no calculator. If you want a target, aim at the line score behind the job you want, not at a general "hard" or "easy" label — the score calculator shows how each subtest moves those scores.
This page tells you the format; these pages do the rest
The study guide covers what each subtest contains and how to prepare for it. The practice test holds 128 original questions with an explanation for every answer; Word Knowledge and Paragraph Comprehension also have their own pages with the full guide and an embedded practice set.
Frequently asked questions
What is the passing score on the ASVAB?
The ASVAB program does not print a passing score. Enlistment eligibility is decided by each branch's minimum AFQT percentile, and the AFQT is computed from four of the ten subtests. The published minimums and the sentence each one comes from are on the minimum ASVAB score page.
How long are ASVAB scores valid?
The official ASVAB FAQ states that scores may be used for enlistment for up to two years from the date of testing, provided they can be verified as yours. A recruiter confirms the current rule for your case.
How soon can I retake the ASVAB?
The official policy is one calendar month after the first test, another calendar month before a second retest, and six calendar months after that. The retaking section of the minimum score page links every source.
Can you use a calculator on the ASVAB?
You cannot use a calculator when taking the ASVAB. The official explanation is that the ASVAB is an employment test: it measures whether you can apply math principles to job problems, and hand calculation may be required on the job.
Does the paper test have the same subtests as the computer test?
No. The computer test administers AI and SI as two subtests, while the paper test combines them into one Auto & Shop Information subtest. That is why the paper test has 9 subtests and 225 questions, against 10 subtests and 135 scored questions on the computer. The combined AS score is reported for both formats.