ASVAB Study Guide: What It Is and What Score You Need
Updated July 2026
The ASVAB decides whether you can enlist and which military jobs you qualify for. Understanding how it is scored — and studying the right parts — is one of the highest-payoff things you can do before joining.
What the ASVAB is
The Armed Services Vocational Aptitude Battery is a multi-subtest exam covering math, verbal skills, science, and technical knowledge (electronics, mechanical, and auto/shop). You take it at a MEPS or a satellite test site, usually on a computer.
The AFQT — your enlistment score
The most important number is the AFQT, drawn from four subtests: Arithmetic Reasoning, Mathematics Knowledge, Word Knowledge, and Paragraph Comprehension. It is reported as a percentile from 1–99 — a 60 means you scored as well as or better than 60% of a reference group. Your AFQT decides whether you meet the minimum to enlist.
What AFQT score do you need?
Minimums vary by branch and change over time. As a general guide, most branches require an AFQT of about 31–36 for high-school diploma graduates, with the Coast Guard and some others requiring higher. GED holders typically need a higher score. Because these numbers shift, confirm the current minimum with a recruiter — and aim well above the minimum, since a higher score unlocks far more jobs.
Line scores — how jobs are assigned
Beyond the AFQT, each branch combines your subtest scores into "line scores" or composites used to qualify you for specific jobs (an MOS, rating, or AFSC). A strong AFQT gets you in the door; strong subtest scores in the right areas get you the job you actually want.
How to study
Focus your time where it counts: the four AFQT subtests move your enlistment score the most, and math is where most people gain the most points. Practice real questions under timed conditions, review every miss, and drill vocabulary. Our free ASVAB practice tests cover every subtest with instant scoring.
Test day
Sleep well, eat a normal meal, and bring your ID. Pace yourself — unanswered questions count against you, so make your best guess rather than leaving blanks. If you are unhappy with your score, you can retake the ASVAB after a waiting period.
Frequently asked questions
What is a good ASVAB score?
The AFQT is a percentile from 1 to 99. Anything above 50 is above average; 60+ is solid and opens most jobs, and 80+ is competitive for the most selective roles. The minimum to enlist is much lower, but a higher score gives you more job choices.
What ASVAB score do you need to join each branch?
Minimums vary and change, but most branches require an AFQT of roughly 31–36 for diploma graduates, with the Coast Guard and Space Force often requiring higher, and GED holders needing more. Always confirm the current number with a recruiter.
How is the AFQT calculated?
The AFQT comes from four ASVAB subtests: Arithmetic Reasoning, Mathematics Knowledge, Word Knowledge, and Paragraph Comprehension. The verbal subtests are combined into a Verbal Expression score, then formulated into the final AFQT percentile.
Can you retake the ASVAB?
Yes. You can retake it after a waiting period — typically one month after your first two attempts, then a longer wait for further retakes. Your most recent score is the one that counts.
How long is the ASVAB?
The computer-adaptive version (CAT-ASVAB) generally takes about 1.5 hours; the paper version takes longer. Plan for a longer day overall if you are testing at MEPS.