The ASVAB (Armed Services Vocational Aptitude Battery) is a multiple-aptitude test developed by the U.S. Department of Defense. The military uses it to decide whether you qualify to enlist and which jobs you are best suited for.

Some high schools also offer the ASVAB through the ASVAB Career Exploration Program, which helps students explore career paths without any military obligation.

The computerized ASVAB (CAT-ASVAB) has 10 subtests: General Science, Arithmetic Reasoning, Word Knowledge, Paragraph Comprehension, Mathematics Knowledge, Electronics Information, Auto Information, Shop Information, Mechanical Comprehension, and Assembling Objects. The paper version combines Auto and Shop Information into one subtest, so it has 9.

Four of these subtests (Arithmetic Reasoning, Mathematics Knowledge, Word Knowledge, and Paragraph Comprehension) determine your AFQT score. The others contribute to the line scores used to match you with specific military jobs.

The CAT-ASVAB has roughly 125 to 145 questions across its 10 subtests. The exact number varies because some tests include unscored research questions. Each subtest has its own time limit, and the exam is self-paced, so most people finish in about 1.5 to 3 hours.

The paper-and-pencil ASVAB has more questions (roughly 190 to 225, depending on the version), a fixed time limit for each subtest, and takes about 3 hours including instructions.

The ASVAB does not use a simple percent-correct score. The CAT-ASVAB is adaptive: a correct answer leads to a harder question, and an incorrect answer leads to an easier one. Your score reflects both how many questions you answered correctly and how difficult they were.

Your results are compared with a national reference group. You receive a standard score for each subtest and an AFQT percentile from 1 to 99. Each branch then combines subtest scores into line scores (also called composites) to decide which jobs you qualify for.

The AFQT (Armed Forces Qualification Test) score is the main number that decides whether you are eligible to enlist. It is calculated from Arithmetic Reasoning, Mathematics Knowledge, and a verbal score built from Word Knowledge and Paragraph Comprehension, with the verbal portion counted twice.

The AFQT is a percentile. A score of 50 means you scored higher than about half of the reference group. The minimum score depends on the branch and on whether you hold a high school diploma or a GED. It generally falls between about 31 and 40, and GED holders often need a higher score. Policies change, so confirm the current requirement with a recruiter.

An AFQT score of 50 is average, and most branches accept applicants with a diploma at a score in the low 30s or above. A higher score gives you more choices. AFQT categories run from Category I (93 to 99) and Category II (65 to 92) down through Category IIIA (50 to 64) and IIIB (31 to 49).

What counts as “good” also depends on the job you want. Many jobs require specific line scores, so a strong result in the right subtests can matter as much as your overall AFQT.

A well-built practice exam is a reliable way to measure your readiness, find weak areas, and get comfortable with the question styles. It is not the official ASVAB, and no practice test can predict your exact score. The real CAT-ASVAB is adaptive and is scored against a national reference group, so practice results are an estimate.

Look for practice exams that cover every subtest, use realistic question types and timing, and explain the correct answers. Use your results to guide your studying rather than as a guarantee.

Start with a full-length practice test to set a baseline. Then focus first on the four AFQT subtests, since they decide whether you can enlist, and move on to the subtests that matter for the jobs you want.

Review every question you miss and understand why, practice under timed conditions to build pacing, and take another full-length test before your exam date to check your progress. Most people benefit from several weeks of steady study, but the right timeline depends on your starting point and your target score.

On the CAT-ASVAB you answer one question at a time and cannot skip a question or go back to change an answer. If time runs out, unanswered questions can lower your score, so give your best answer to every question.

On the paper version, wrong answers are not penalized and you can change answers within the subtest you are working on, so answer every question.

Yes, you can retake it. The official policy sets waiting periods instead of a fixed limit: wait one calendar month after your first test, another month after your first retest, and six months between each retest after that.

Your most recent score is the one that counts, even if it is lower than an earlier score. Each branch also has its own rules about when it authorizes a retest, so talk with your recruiter before you schedule one.

ASVAB scores are valid for two years from the test date. If you have not enlisted within that time, you will need to retest before a recruiter can process your enlistment.

The CAT-ASVAB is the computer-adaptive version, taken at a Military Entrance Processing Station (MEPS) and used by most enlistees. The paper ASVAB is given at some Mobile Examination Test (MET) sites: every test-taker gets the same questions in the same order.

The PiCAT is an unproctored online version taken outside a testing center. If you take it, you complete a shorter verification test at MEPS to confirm your results. All versions measure the same abilities and produce comparable scores.

The official ASVAB program website, officialasvab.com, has test details, score explanations, and retest policies. Your military recruiter, your local MEPS, or your school counselor can also confirm current requirements for your situation.