It's the first question almost every IELTS candidate asks, and it has the least satisfying answer: it depends. But that's not a cop-out — the honest range is surprisingly predictable once you know two things about yourself. How far your English sits from the band you need, and how many hours a week you can realistically give it. Pin down those two numbers and you can stop guessing, stop panicking about the test date, and build a plan that actually gets you to the exam ready. Here's how the timeline really works.
The rough rule most teachers use
There's a well-worn estimate in language teaching: it takes roughly 120 guided hours of study to move up one full IELTS band. It isn't a law of physics, but it's a genuinely useful anchor. If you're sitting comfortably at a band 5.5 and you need a 6.5, you're looking at somewhere around 200 hours of focused work once you fold in lessons, practice tests, feedback and self-study. Someone climbing two full bands should plan for the better part of a year. Someone polishing a 6.5 into a 7 might need only a couple of months. The size of the gap you're closing matters far more than the date circled on your calendar.
Be honest about your starting point
Almost everyone overestimates their current level, and it's an expensive mistake. Before you plan anything, sit one full, timed practice test under real conditions — no pausing the audio, no dictionary, no second attempts at a question. The band you score there is your true starting line, not the flattering result from a relaxed online quiz you took last year. Pay particular attention to Writing, because it's where most candidates are weakest and where scores climb most slowly. If you're a 6 in Speaking but a 5.5 in Writing and you need an overall 7, your plan has to pour most of its energy into the weak skill, not the one you happen to enjoy. Knowing your real profile turns “how long?” into a question you can actually answer.
How many hours a week can you truly commit?
This is where timelines are won and lost. Two hundred hours sounds enormous until you break it down. Study ten focused hours a week and you'll get there in about five months; manage twenty and you can nearly halve that. But focused is the word that matters — thirty minutes of real practice with feedback beats three hours of drifting through vocabulary lists you'll never use. Be honest about your life, too. If you work full-time and have a family, five to eight quality hours a week is a pace you can actually sustain; planning for twenty and burning out in a fortnight helps no one. A steady, slightly boring rhythm you keep for three months will always beat a heroic sprint you abandon in week two.
A realistic timeline by goal
To make it concrete, here's what typical plans look like. One band away with part-time study? Three to four months is comfortable. Two bands away, part-time? Plan for eight months or more, and don't rush it. Already scoring close to your target and just need to sharpen technique and timing? Four to six weeks of intensive work can be enough, because the English is already there — what you're really learning is the test itself. And if you need a band 7 or higher for a visa or a competitive university place, don't book the exam until a full mock puts you within half a band of the target. Booking too early and re-sitting costs far more time and money than waiting six weeks and passing once.
Make the hours actually count
Two people can each study 200 hours and walk out with completely different scores. The difference is nearly always structure and feedback. IELTS isn't only a test of English — it's a test of how well you handle IELTS, and that second part is learnable surprisingly fast. You need someone to mark your writing honestly, to point out that your Task 2 essays keep drifting off the question, to catch the pronunciation habit that's quietly capping your Speaking band. Practising your mistakes alone just makes them permanent. This is exactly where a good teacher earns their keep, compressing months of trial and error into a few weeks of targeted correction.
So — how long does it really take? For most people closing a one-band gap, plan on three to four steady, guided months, and start by finding out precisely where you stand today. If you'd like that structure, honest feedback on your writing and speaking, and a plan built around the band you actually need, our IELTS preparation courses at Kensington English are designed to get you there without the wasted months. Book your test when you're ready — not a day before.
