ASVAB Test / Guides
The ASVAB, explained
Updated October 4, 2026 · Checked against officialasvab.com
In short: the ASVAB (Armed Services Vocational Aptitude Battery) is the test every U.S. military applicant takes. It has 10 subtests. Most applicants take the computer-adaptive CAT-ASVAB at a MEPS: 135 scored questions, each subtest timed on its own, and no going back to an answer once you submit it. Four subtests make up your AFQT, the 1 to 99 percentile that decides whether you can enlist.
The test at a glance
| Versions | Computer-adaptive CAT-ASVAB at a MEPS; paper and pencil at some MET sites; the at-home PiCAT for first-time testers |
|---|---|
| Questions | 135 scored on the CAT-ASVAB; 225 on the paper version |
| Time | Each subtest is timed separately. Most people finish the CAT-ASVAB in about 1.5 to 2 hours; the paper version takes about 3 |
| Answer format | Multiple choice with four options |
| Can you go back? | Not on the computer version: once you submit an answer it is final |
| Guessing | The CAT-ASVAB penalizes random guessing, so keep answering carefully when time runs low. The paper version has no penalty |
| Cost | Free for military applicants, arranged through a recruiter |
| Retesting | Wait one calendar month, another month for a second retest, then six months |
| Score validity | Two years from the test date |
The 10 subtests
In the order they are given on the CAT-ASVAB, with its question counts and time limits. The four marked AFQT make up the score that decides eligibility; the rest decide which jobs you qualify for.
| Subtest | Questions | Minutes | What it covers |
|---|---|---|---|
| General Science (GS) | 15 | 12 | Life science, earth and space, and physical science: the facts a good high-school course covers. |
| Arithmetic Reasoning (AR) AFQT | 15 | 55 | Word problems: rates, percents, ratios, money and time. Counts double-weight toward your AFQT. |
| Word Knowledge (WK) AFQT | 15 | 9 | Synonyms and meaning in context. Half of the verbal score that counts twice in your AFQT. |
| Paragraph Comprehension (PC) AFQT | 10 | 27 | Short passages: main idea, details, inference. The other half of your double-weighted verbal score. |
| Mathematics Knowledge (MK) AFQT | 15 | 31 | High-school math: algebra, geometry, exponents and probability. Counts toward your AFQT. |
| Electronics Information (EI) | 15 | 10 | Current, voltage and resistance, circuits, wiring and electronic devices. Key for technical ratings. |
| Auto Information (AI) | 10 | 7 | Engines, fuel and ignition, drivetrain, brakes and cooling. Reported together with Shop as the AS score. |
| Shop Information (SI) | 10 | 6 | Tools, fasteners, materials and shop practices. Reported together with Auto as the AS score. |
| Mechanical Comprehension (MC) | 15 | 22 | Levers, pulleys, gears, pressure and force: how machines move. Key for mechanical jobs. |
| Assembling Objects (AO) | 15 | 18 | Spatial puzzles: see how parts fit together. Used mainly by the Navy for some ratings. |
Auto Information and Shop Information are separate subtests on the computer, but they are reported together as one AS score.
How the AFQT is scored
Your AFQT comes from Arithmetic Reasoning (AR), Mathematics Knowledge (MK), Word Knowledge (WK) and Paragraph Comprehension (PC). WK and PC are combined into a verbal score that counts twice. The result is a percentile from 1 to 99: a 62 means you scored as well as or better than 62% of a national sample of 18 to 23 year olds.
Percentiles fall into categories that recruiters use:
| Category | AFQT percentile |
|---|---|
| I | 93–99 |
| II | 65–92 |
| IIIA | 50–64 |
| IIIB | 31–49 |
| IVA | 21–30 |
| IVB | 16–20 |
| IVC | 10–15 |
| V | 1–9 |
Each branch sets its own minimum. See ASVAB scores by branch, or try the AFQT calculator.
How to prepare
- Start with the AFQT four. Arithmetic, math, vocabulary and reading decide whether you can enlist at all, and verbal counts twice.
- Practice at real pace. Word Knowledge gives you about 36 seconds a question; Arithmetic Reasoning gives you over three minutes. Timed practice teaches you which is which.
- Learn the patterns, not answers. Work rates add, percent change divides by the original, levers balance by weight times distance. The ASVAB cheat sheet lists them.
- Take full exams. Ten subtests in a row, each on its own clock, is a different test from twenty questions on the bus.
Try our free ASVAB practice test, or get the app for all 516 questions, timed full-length exams and an estimated AFQT.
Practice for the ASVAB on your phone. 516 questions across all 10 subtests, full exams timed like the real test, and your AFQT against your branch's line.
Sources
- Official ASVAB Enlistment Testing Program
- ASVAB Fact Sheet (test lengths, time limits, retesting)
- Official ASVAB: understanding your scores
- Official ASVAB: what to expect
ASVAB Test is an independent study aid and is not affiliated with the U.S. Department of Defense or any branch. Test rules can change; confirm them with a recruiter.