DAT vs MCAT: Which Exam Is Actually Harder?

Short answer: neither one is "harder" across the board, they're hard in different ways. The MCAT is harder in raw breadth, reading stamina, and total seat time. The DAT is harder in speed per question and in testing a spatial-reasoning skill, the Perceptual Ability Test, that the MCAT doesn't touch at all. If you're weighing DAT vs MCAT which is harder for your own situation, the honest answer depends on which kind of hard you're worse at.

We're not going to give you a reddit hot take here. We scored in the top 3% on the DAT (97th+ percentile) and are now at the #1 dental school in the world, so we know the DAT cold. We're going to walk through both exams section by section, on content and on question style, so you can actually decide which one to worry about first.

DAT vs MCAT at a Glance

Before the section-by-section breakdown, here's the shape of each exam side by side.

Numbers move over time, so confirm exact current specs at ada.org and aamc.org before you lock in a study plan.

Content Breadth: the MCAT Simply Tests More

This one isn't close. The DAT's science content is biology, general chemistry, and organic chemistry, full stop. No physics, no psychology, no sociology, no biochemistry pathways beyond what overlaps with organic chemistry.

The MCAT folds in everything the DAT tests, then adds physics, biochemistry, and an entire psychology/sociology section. That's a meaningfully longer content list to master, which is why MCAT prep timelines tend to run longer than DAT ones.

If "harder" means "more stuff to memorize," the MCAT wins outright. It's the practical reason many students in a combined track tackle the DAT first: get biology, gen chem, and organic chemistry to test-ready depth, bank that score, then expand into MCAT-only material.

Question Style: Fast Recall vs Long Passage Reasoning

Content breadth is only half the story. Question style is where the two exams feel completely different in the room.

• DAT Survey of Natural Sciences: 100 questions in 90 minutes, roughly 54 seconds per question. Mostly direct, standalone questions testing whether you know a fact or a mechanism cold. Little passage-reading required.
• MCAT science sections: around 59 questions in 95 minutes each, but most are tied to 10-question passages you have to read, interpret, and apply data from first. You're reasoning through a scenario, not just recalling a fact.
• DAT Reading Comprehension: 50 questions on 3 science passages in 60 minutes. Dense, but purely science content.
• MCAT CARS: passages pulled from humanities and social science with no scientific content at all, which trips up science-heavy students who assumed reading comprehension would be their strong suit.

Net effect: the DAT rewards students who've drilled enough discrete facts and mechanisms to answer fast without deliberating. The MCAT rewards students who can sustain careful, passage-based reasoning for hours without their accuracy sliding late in a section. Those are genuinely different muscles.

The Perceptual Ability Test Has No MCAT Equivalent

This is the single biggest reason "which is harder" doesn't have a clean answer. The DAT includes the Perceptual Ability Test: 90 questions in 60 minutes across six subtypes (keyholes/apertures, top-front-end, angle ranking, hole punching, cube counting, and pattern folding).

PAT is scored separately from your Academic Average, and it isn't something your GPA or MCAT prep prepares you for. It's a trainable spatial-reasoning skill, but only if you practice it specifically. We've seen strong students blindsided by PAT because nothing in their coursework ever asked them to mentally rotate a 3D object on a clock.

The MCAT has nothing like it. So if you're strong on paper-and-pencil academics but have never done a spatial-reasoning drill, the DAT can feel harder than the MCAT purely because of one section the MCAT doesn't have.

Timing and Endurance: the MCAT Is the Longer Day

The full DAT appointment, including tutorials and breaks, runs about 5 hours. The MCAT's total appointment, with its four sections and built-in breaks, runs closer to 7.5 hours.

Endurance matters more on the MCAT simply because there's more day to get through. Students who fatigue late and see accuracy drop in the final section will feel that more on the MCAT's longer clock. That's an endurance-difficulty gap, not a content-difficulty gap, and it's worth training with full-length practice under real timing rather than assuming stamina shows up on its own.

Which Section Trips Up Which Student

Based on the pattern we see across forum threads and our own experience prepping for the DAT, here's roughly how the difficulty complaints split:

1. Strong test-takers who've never trained spatial reasoning get surprised by PAT on the DAT specifically. Nothing else on either exam tests this skill, so it can't be "studied away" with more biology review.
2. Students who read slowly under pressure feel the MCAT's CARS section and passage-heavy science sections as the harder half of that exam, since speed-reading dense non-science text is its own skill.
3. Students weak on raw recall speed feel the DAT's Survey of Natural Sciences as brutal, since 54 seconds per question leaves no room to reason your way to an answer you don't already know.
4. Students who haven't touched physics or biochem since undergrad feel the MCAT as harder purely on content volume, since that's material the DAT never asks about.

So Which Should You Prioritize First in a Combined Track?

If you're genuinely deciding DAT vs MCAT which is harder because you're weighing both dental and medical school, the honest framework is this: prioritize whichever exam's application cycle comes first, since neither score is a substitute for the other and both eventually expire.

If timing is flexible, we lean toward taking the DAT first. Its content list is narrower, so you can get it to a genuinely finished, test-ready state faster. Once that score is banked, the biology, gen chem, and organic chemistry work carries over directly into MCAT prep, and you only need to layer in physics, biochemistry, and psych/soc.

For a full walkthrough of where the DAT should sit on your overall pre-health calendar, see our pre-dental timeline guide covering the DAT, MCAT, and shadowing hours. And if you're still deciding on exam year, our post on when to take the DAT, junior or senior year, walks through the tradeoffs.

Our Honest Take

Obvious disclosure: we built DATPractice, so read this knowing where we stand. Our honest reasoning is that "which exam is harder" is the wrong question. The right question is which exam's difficulty profile matches your weak spots, and how fast you can close that gap with focused practice instead of open-ended studying.

That's the whole philosophy behind DATPractice: the DAT is a standardized test, so consistent full-length practice scores become your real score. Practice under real conditions, learn only what the exam actually rewards, and stop guessing whether you're "MCAT smart" or "DAT smart." You're just under-practiced on one of them until you're not.