How Many Hours Should You Study for the GMAT?
Somewhere between 40 and 250 hours, depending on where you start and where you need to be. GMAC's own survey data gives a useful benchmark, and your work schedule decides how many weeks it takes. Here's how to work out your number.
The GMAT is usually a side project. You're preparing around a job, and every hour you spend on it comes out of an evening or a weekend. That makes it worth knowing roughly how many hours you'll need before you start, so you can pick a test date that's realistic rather than hopeful.
Most people need 80 to 150 focused hours over two to four months. That's in line with GMAC's survey data, where the median test taker prepared for 80 hours and people who reported high scores prepared for about 100. Take an official practice exam first, then use your gap to decide where you fall in that range.
What GMAC's data says
GMAC, which runs the GMAT, surveyed test takers in 2020 about their preparation. The findings are worth knowing, with one caveat: they come from the previous version of the test, which was scored from 200 to 800.
- The median test taker prepared for 80 hours.
- Higher scorers prepared for longer. People who reported scores below 500 had a median of 50 hours of preparation. People who reported 700 or higher had a median of 100 hours.
- High scorers started earlier. About half of those reporting 700 or higher started preparing seven or more weeks before their test, and in general people who started earlier ended up with more total hours.
- Plenty of people start late. Only about a fifth of all respondents started 10 or more weeks ahead, and 29% started just four to six weeks before their test.
GMAC is careful to say this isn't cause and effect. Studying 100 hours won't guarantee a particular score, and some people need far fewer. But the direction is clear, and it's a useful sanity check on any plan.
To translate the old scale, GMAC says a 645 on today's GMAT is equivalent to a 700 on the old one. So the 100-hour median for people who scored 700 or higher is roughly the benchmark for 645 or higher now, which puts you in about the top 15% of test takers.
The short answer: hours by point gap
| Where you're starting | Focused hours | Timeline at about 10 hours a week |
|---|---|---|
| Within 30 to 40 points of your target | 40–70 | 1–2 months |
| 50 to 100 points short | 80–150 | 2–4 months |
| More than 100 points short, or rusty on math | 150–250 | 4–6 months |
These are our planning estimates, built on GMAC's data and on how long preparation typically takes. Your point gap is the difference between your first official practice exam and the median GMAT at the programs you're applying to.
Why the last 50 points take the longest
The GMAT adapts to you question by question. As you improve, you see harder questions, and the mistakes you're fixing become rarer and subtler. Moving from the 500s into the low 600s is often a matter of shoring up fundamentals and pacing. Moving from the mid-600s toward 705 usually means getting the hardest questions right consistently in all three sections, and that takes more hours per point.
Where your gap sits matters too. If most of it is in one section, targeted work can close it faster than the table suggests. If you're a little behind in all three, expect the slower end of the range.
How many hours a week, around a job
| Your situation | Hours a week | What it looks like |
|---|---|---|
| Full-time job with long hours | 8–10 | An hour on four weekday evenings, plus 4 to 6 hours at the weekend |
| Full-time job with a regular schedule | 10–12 | An hour or so most evenings, a long weekend session, and a practice exam every couple of weeks |
| Between jobs or studying full-time | 20–25 | Four to five focused hours a day, five days a week |
More than four or five hours of GMAT work in a day rarely helps. The questions demand concentration, and tired practice builds bad habits. If you need more hours, add weeks rather than cramming them into each day.
Where your GMAT hours should go
Here's how a 10-hour week might split for someone whose weakest section is Data Insights:
| Block | Time | What you do |
|---|---|---|
| Weakest section | 4 hours | Fundamentals and timed sets in Data Insights, covering all five question formats |
| Quantitative Reasoning | 2 hours | Timed mixed sets without a calculator |
| Verbal Reasoning | 2 hours | Critical Reasoning and Reading Comprehension sets, plus some dense reading |
| Review | 2 hours | Your error log, including questions you got right by guessing |
Every two weeks or so, replace part of the week with a full official practice exam. The exam takes 2 hours 15 minutes, and a proper review takes about two hours more. Plan on four to six practice exams across your preparation, starting with the two free ones in GMAC's Official Starter Kit.
How far ahead should you start?
Work backwards from your application deadline, not forwards from today:
- Pick your deadline, such as a school's first-round date.
- Book your first test date four to six weeks before it. You can retake after 16 days, and GMAT Superscore now combines your best section scores across attempts, so a second sitting is worth leaving room for.
- Count back your prep time from that test date. At 10 hours a week, 100 hours means starting about 10 weeks earlier.
If that start date has already passed, consider a later application round rather than squeezing 100 hours into five weeks around a full-time job.
Is one month enough? What about two weeks?
A month works if you're within 30 or 40 points of your target and can manage 15 to 20 hours a week. That's 60 to 80 hours, which is enough to fix your pacing and a couple of weak question types. For a bigger jump, it usually isn't.
Two weeks is really only enough to get used to the format, take the official practice exams and sharpen your timing. If your diagnostic is already close to your target, that might be all you need. If it isn't, move the test date.
What counts as GMAT study time
- Counts: timed question sets, full practice exams, reviewing every mistake, updating your error log, and drilling the fundamentals you keep getting wrong.
- Doesn't really count: watching strategy videos without doing questions, redoing questions you already know, and untimed practice once you're past the basics.
For section-by-section strategy, see our guide on how to prepare for the GMAT.
Track your GMAT hours by section
Log focused time for Quant, Verbal and Data Insights, keep a streak through busy work weeks, and build a topic checklist in our free custom syllabus tracker.
Track Your GMAT Hours Free →Mistakes that waste GMAT hours
- Booking a test date before taking a diagnostic. You won't know how many hours you need.
- Spending most of your time on your strongest section. GMAC itself flags this as a common mistake among first-time test takers.
- Counting hours instead of reviewing mistakes. An hour of review is often worth more than an hour of new questions.
- Studying only at weekends. Short weekday sessions keep your skills fresh between longer weekend blocks.
- Leaving no room for a retake. With a 16-day wait between attempts, a test date too close to your deadline removes your safety net.
Keep the count honest
It's easy to lose track when prep fits around work. A week that felt busy might turn out to be four hours of real practice.
Start a timer when you begin real practice, stop it when you drift, and tag each session as Quant, Verbal or Data Insights. After a couple of weeks you'll know whether you're on pace for your total. That's what Group Study Timer is for. It logs focused hours by subject, keeps a streak, and lets you study alongside other people who are preparing at the same time.
Make this week's hours actually happen
A free study timer with subject tracking, streaks and heatmaps. It runs in your browser, so there's nothing to install.
Open the Free Study Timer →Frequently asked questions
How many hours should you study for the GMAT?
Most people need 80 to 150 focused hours. In GMAC's 2020 survey, the median test taker prepared for 80 hours, and people who reported scores of 700 or higher on the old scale, roughly 645 or higher today, had a median of 100 hours.
Is one month enough to study for the GMAT?
It can be if you're within 30 or 40 points of your target and can put in 15 to 20 hours a week. For most people working full-time, two to four months is more realistic.
How many hours a day should I study for the GMAT?
If you work full-time, an hour on most weekday evenings plus a longer weekend session is a sustainable pace, which comes to about 8 to 10 hours a week. If you're studying full-time, four to five focused hours a day is plenty.
How many hours does it take to improve your GMAT score by 100 points?
Usually 100 to 200 focused hours over three to five months, depending on your starting point and how much of the gap sits in one section. Gains near the top of the scale take longer than gains in the middle.
How far in advance should I start studying for the GMAT?
Two to four months before your test date suits most people, and the test date should leave time for a retake before your application deadline. In GMAC's survey, about half of the people who reported 700 or higher started seven or more weeks ahead.
Start with an official practice exam and your schools' median scores, then budget 80 to 150 hours for most gaps and more if you're far off. Fit the hours around work at about 8 to 12 a week, give your weakest section the biggest share, leave room for a retake, and track your hours so the plan holds up.
Sources we checked in September 2026: GMAC on how long to study for the GMAT, understanding your score, the exam structure, retake policies and GMAT Superscore. GMAC's survey figures refer to the previous 200 to 800 scale, and the hour ranges in our tables are our own planning estimates.