ASVAB practice test 225 free questions, all explained.
Start with one question from each of the 9 subtests below. Then take a 25-question test in any subtest. No sign up, no timer.
Quick check
1 of 9General Science
Which group of animals is characterized by having jointed appendages, a segmented body, and an exoskeleton made of chitin?
- AMollusks
- BAnnelids
- CArthropods
- DEchinoderms
Show answer
C is right. Arthropods, which include insects, arachnids, and crustaceans, have jointed limbs, segmented bodies, and a rigid chitinous exoskeleton. Mollusks typically have soft bodies and many produce calcium carbonate shells rather than segmented chitinous exoskeletons. Annelids are segmented worms that lack jointed appendages.
Arithmetic Reasoning
An inventory audit determines that 0.375 of a shipment consists of first-aid kits. If the shipment contains 480 items in total, how many first-aid kits are in the shipment?
- A120
- B210
- C160
- D180
Show answer
D is right. Converting the decimal 0.375 to a fraction gives 3/8. Multiplying 480 by 3/8 yields 180 first-aid kits. The common error of estimating 0.375 as approximately one-third yields 160, which is incorrect.
Word Knowledge
The company had to DEPLETE its cash reserves to pay for the new equipment. In this sentence, DEPLETE most nearly means
- Ause up
- Bcount
- Cincrease
- Dprotect
Show answer
A is right. Deplete means to use up or greatly reduce a supply. Increase is the opposite of depleting reserves, while count and protect do not convey using up the money.
Paragraph Comprehension
Passage
Commissioned by Emperor Vespasian around 70 CE, the Flavian Amphitheatre in Rome, better known as the Colosseum, represents a pinnacle of ancient engineering. Capable of holding an estimated fifty thousand spectators, the massive freestanding oval structure utilized an intricate network of concrete vaults and arches. For centuries, crowds gathered within its walls to witness gladiatorial combat, staged wild animal hunts, and simulated naval battles. Despite suffering extensive damage from natural earthquakes and medieval stone quarrying, the arena remains one of the world's most recognizable architectural ruins and a profound reminder of Roman imperial authority.
Which title best summarizes this passage?
- AThe Rise and Fall of the Flavian Dynasty
- BRestoring Historic Ruins in Southern Europe
- CThe Colosseum: An Enduring Symbol of Imperial Rome
- DAncient Gladiators: Daily Life in Combat
Show answer
C is right. The passage focuses on the construction, public spectacles, survival, and significance of Rome's Flavian Amphitheatre. The Colosseum: An Enduring Symbol of Imperial Rome effectively encompasses all of these topics. The Rise and Fall of the Flavian Dynasty is too broad because the text only mentions Vespasian commissioning the monument and does not explore the dynasty's political history.
Mathematics Knowledge
What is the least common multiple of 12, 15, and 20?
- A30
- B60
- C120
- D180
Show answer
B is right. The least common multiple is 60 because it is the smallest number evenly divisible by 12 (12 * 5), 15 (15 * 4), and 20 (20 * 3). While 120 is also divisible by all three numbers, it is not the smallest common multiple.
Electronics Information
What parameter of a bipolar junction transistor describes its current amplification factor by comparing collector current to base current?
- ABeta
- BTransconductance
- CCapacitance
- DAlpha
Show answer
A is right. Beta, often labeled as hFE, represents the ratio of collector current to base current and defines the current gain of a bipolar transistor. Alpha represents the ratio of collector current to emitter current, which is always slightly less than one rather than an amplifying multiplier.
Auto Information
Which sensor installed in the air intake duct directly measures the mass of air entering the engine?
- AThrottle position sensor
- BEngine coolant temperature sensor
- COxygen sensor
- DMass air flow sensor
Show answer
D is right. The mass air flow sensor is mounted in the intake duct between the air filter and throttle body to calculate the incoming air mass so the powertrain control module can inject the correct amount of fuel. The throttle position sensor measures the opening angle of the throttle valve rather than the actual air mass passing through.
Shop Information
Which standard socket drive size is best suited for small fasteners in tight spaces, such as dashboard assemblies and small engine components?
- A3/8-inch drive
- B1/2-inch drive
- C1/4-inch drive
- D3/4-inch drive
Show answer
C is right. A 1/4-inch drive is the smallest common mechanical drive size, designed for low-torque fasteners typically under 14 millimeters in confined spaces. A 3/8-inch drive is the standard general-purpose automotive size, while 1/2-inch and 3/4-inch drives are reserved for heavy-duty and high-torque applications.
Mechanical Comprehension
A block and tackle system has four rope strands directly supporting a load. If a technician pulls 32 feet of rope through the system, how high will the load be lifted?
- A128 feet
- B64 feet
- C16 feet
- D8 feet
Show answer
D is right. Because four strands support the load, the system has a mechanical advantage of 4, meaning the load moves one-fourth of the distance the rope is pulled. Dividing 32 feet by 4 gives a lift height of 8 feet. The value of 128 feet comes from incorrectly multiplying the pulled rope length by the mechanical advantage instead of dividing.
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Practice tests
9 subtests.
25 questions each.
Each test has original questions, each with the answer and a written explanation. The list follows the order of the real test.
General Science GS
Knowledge of physical and biological sciences
- On the real test
- 15 questions · 12 min
- Full bank
- 485 questions
Arithmetic Reasoning AR AFQT
Ability to solve arithmetic word problems
- On the real test
- 15 questions · 55 min
- Full bank
- 715 questions
Word Knowledge WK AFQT
Ability to select the correct meaning of words presented in context and to identify the best synonym for a given word
- On the real test
- 15 questions · 9 min
- Full bank
- 505 questions
Paragraph Comprehension PC AFQT
Ability to obtain information from written passages
- On the real test
- 10 questions · 27 min
- Full bank
- 438 questions
Mathematics Knowledge MK AFQT
Knowledge of high school mathematics principles
- On the real test
- 15 questions · 31 min
- Full bank
- 681 questions
Electronics Information EI
Knowledge of electricity and electronics
- On the real test
- 15 questions · 10 min
- Full bank
- 424 questions
Auto Information AI
Knowledge of automobile technology
- On the real test
- 10 questions · 7 min
- Full bank
- 315 questions
Shop Information SI
Knowledge of tools and shop terminology and practices
- On the real test
- 10 questions · 6 min
- Full bank
- 304 questions
Mechanical Comprehension MC
Knowledge of mechanical and physical principles
- On the real test
- 15 questions · 22 min
- Full bank
- 442 questions
Assembling Objects AO
Ability to determine how an object will look when its parts are put together
- On the real test
- 15 questions · 18 min
- Full bank
- 200 questions
No free test here: these questions use drawn figures. They are in the full bank.
- Times are without tryout questions. Each test taker also gets unscored tryout questions in 2 to 4 subtests, with extra time.
- AFQT: the AFQT score is computed from Arithmetic Reasoning, Mathematics Knowledge, Paragraph Comprehension and Word Knowledge.
- Auto Information and Shop Information are timed separately on the computer test and reported as one score (AS).
Source: Official ASVAB website, What to Expect (computer test table and subtest list); Official ASVAB website, Understanding ASVAB Scores. Checked Oct 26, 2026.
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- 225 questions in 9 subtest tests, 25 in each
- This 9-question quick check, one question per subtest
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One explanation, in full
Arithmetic Reasoning · Solving missing values in proportions
A military truck uses 18 gallons of fuel to travel 108 miles. At this same rate of fuel consumption, how many gallons of fuel will the truck require to travel 252 miles?
- A48 gallons
- B42 gallonsAnswer
- C38 gallons
- D36 gallons
Why B is right
Dividing 108 miles by 18 gallons gives the truck a rate of 6 miles per gallon. Dividing 252 miles by 6 miles per gallon yields 42 gallons needed for the trip. The value 36 gallons is incorrect because it corresponds to an overestimated fuel economy of 7 miles per gallon.
Take the 25-question Arithmetic Reasoning test · Lesson: Solving Word Problems Step by Step ·
Study guide
50 lessons.
Audio in English and Spanish.
The first lesson in each subtest is open to everyone. The others come with every plan.
Open the study guide- General ScienceCells, Genetics and Heredity
- Arithmetic ReasoningSolving Word Problems Step by Step
- Word KnowledgeHow Word Knowledge Questions Work
- Paragraph ComprehensionFinding the Main Idea
- Mathematics KnowledgeNumber Properties and Order of Operations
- Electronics InformationElectricity Basics: Current, Voltage and Resistance
- Auto InformationHow an Engine Works
- Shop InformationHand Tools and Their Uses
- Mechanical ComprehensionForce, Work and Energy
- Assembling ObjectsAssembling Objects: Spatial Strategies
Questions, answered.
Are these actual ASVAB questions?
No. They are original practice questions written from the public exam outline, not questions taken from the exam. Exam owners keep live questions confidential.
How long is the ASVAB?
On the computer version each of the 10 subtests is timed separately, from 6 minutes for Shop Information to 55 minutes for Arithmetic Reasoning. Without tryout questions the limits add up to 197 minutes; unscored tryout questions add time to some subtests. Source: Official ASVAB website, what to expect on the computer test.
Is this ASVAB practice test free?
Yes. The quick check and all 9 subtest tests, 234 questions in total, are free to use with answers and explanations, and there is no sign up. The full bank of 4,509 questions comes with a plan.
Is the practice test timed?
No. The free tests here have no timer, so you can read every explanation. On the real computer test each subtest has its own time limit, from 6 minutes for Shop Information to 55 minutes for Arithmetic Reasoning. Timed section tests come with a plan.
Where should I start?
Take the quick check at the top, then open the 25-question test for the subtest you found hardest. If you need an AFQT score, Arithmetic Reasoning, Word Knowledge, Paragraph Comprehension and Mathematics Knowledge come first: the AFQT is computed from those four.
Is tests.global the official ASVAB website?
No. The official ASVAB website is officialasvab.com, and it has sample questions too. tests.global is an independent practice site and is not affiliated with or endorsed by the U.S. Department of Defense or any military service.
These are original practice questions written from the public exam outline. They are not actual exam questions. ASVAB is a trademark of its owner. tests.global is not affiliated with or endorsed by the U.S. Department of Defense or any military service.
Updated November 1, 2026. Exam facts checked October 26, 2026 against officialasvab.com.