How long does it take to go from band 6 to band 7?
The largest published study puts a half-band gain at 200–240 hours. What that means for a 6 to 7 plan, and which skill the arithmetic says to work on.
Study timelineGeneralUpdated 7 min read
Most preparation sites answer this question with whatever number sells their course. The honest answer comes from a study that IELTS itself published, and it is longer than you will want it to be. Knowing it is still an advantage: it tells you where the hours you do have should go.
What the research says
Elder and O'Loughlin followed 112 students through 10 to 12 weeks of intensive English at four language centres in Australia and New Zealand, testing them on the Academic module at the start and the end. That is roughly 200 to 240 hours of instruction. The average gain across the group was about half a band.
Two details matter more than the headline:
- The gain was an average. Some students moved a full band, some did not move at all. The spread was wide enough that "half a band per 200 hours" is a planning figure, not a promise.
- Gains were larger for students who started lower. A candidate at band 5 has more easy ground to cover than a candidate at 6.5. Above band 6 the same hours buy less, because what is left to fix is the hard part: precision, range, and consistency under time pressure.
So a plan that starts at 6 and aims at 7 sits on the slow side of that curve.
What "6 to 7" actually requires
Your overall band is the mean of your four skill bands, rounded to the nearest half band. A mean ending in .25 rounds up to the next half band and a mean ending in .75 rounds up to the next whole band. To be reported as a 7 overall, your four scores therefore need to average 6.75 or more.
That single fact changes the plan. From a flat 6 / 6 / 6 / 6 your four scores need to rise by three whole bands in total, in any combination: a full band in three skills, say, or a full band in two and half a band in the other two. That is six half-band steps, which is more than the "just a bit more" most candidates imagine, but it is also not four whole bands. Here are the cheapest routes from a few common starting profiles.
| Listening | Reading | Writing | Speaking | Mean | Cheapest route to a 7 overall |
|---|---|---|---|---|---|
| 6 | 6 | 6 | 6 | 6.00 | +1.0 in three skills, or +1.0 in two and +0.5 in the other two |
| 6.5 | 6.5 | 5.5 | 6 | 6.125 | +1.0 in Listening and Reading and +0.5 in Speaking leaves Writing at 5.5 and still reaches 6.75; or +0.5 in Listening, Reading and Speaking with +1.0 in Writing |
| 7 | 7 | 6 | 6 | 6.50 | +0.5 in both Writing and Speaking, or +1.0 in one of them |
| 7 | 6.5 | 5.5 | 6.5 | 6.375 | +0.5 in Reading, Writing and Speaking, or +1.0 in Writing and +0.5 in Reading |
Notice two things. First, the overall score does not care which skill moves, so the skill that moves most cheaply is the one to work on. Second, an institution that sets a minimum per skill (many universities want no skill below 6.5) removes that freedom: then Writing at 5.5 has to move whatever the arithmetic says.
Turning that into hours
The study measured the rise in a student's mean band: about half a band for 200 to 240 hours. Going from 6 to a reported 7 needs the mean to rise by 0.75, so at the study's average rate that is 300 to 360 hours of instruction, and the rate is slower above band 6. The figure will not hold exactly for you, in both directions:
- Faster: the early part of any plan buys score without buying much English. Learning the question types, the timing, and the traps in each part of the test is worth a good fraction of a half band on Reading and Listening in the first few weeks. That is technique, and it is quick.
- Slower: Writing and Speaking do not move without feedback. You cannot see your own grammatical range or your own coherence problems; the criteria are things an assessor sees from the outside. Hours spent writing essays that nobody grades are hours spent practising your current band.
A reasonable planning table, for a candidate starting at a flat 6:
| Time you can give | Realistic aim | Where the hours should go |
|---|---|---|
| 6 weeks at 8–10 hours a week (about 60 hours) | technique gains on Reading and Listening; one half band in your weakest skill if every hour targets it | question-type drills, timed sections, graded Writing |
| 12 weeks at 10 hours a week (about 120 hours) | one to two half-band steps in individual skills | as above, plus Speaking practice with feedback every week |
| 6 months at 10 hours a week (about 260 hours) | the mean up by about half a band: a 6 overall becomes a 6.5 | a full four-skill plan with a diagnostic every few weeks to redirect the hours |
| 9 to 12 months at 8 hours a week (about 400 hours) | a credible run at 6.75 from a flat 6 | the same plan, with the hours shifting to whichever skill is now cheapest to move |
These are planning figures. The study's average student did not get a whole band in 240 hours, and you should not build a visa or an admission deadline on the assumption that you will. The same arithmetic, generalised to any starting profile and worked for four candidates, is in how to turn your four-skill gap into an hour budget.
The three things that change the rate
- Start with a diagnostic, not with your weakest feeling. Most candidates are wrong about which skill is holding them down by at least half a band. A timed test of all four skills, scored against the criteria, is the first hour of any serious plan.
- Spend hours where the marginal gain is largest. Usually that is the lowest skill, because the lower the band the faster it moves, and because the overall score rewards any skill equally. The exception is when a per-skill minimum forces the choice.
- Get every Writing task and Speaking answer graded. Not "checked" for grammar, graded on the four criteria with reasons. Then rewrite the same task and see what moved — how to review a practice test turns the same discipline into a weekly routine. That loop is the only part of preparation that reliably shifts the productive skills, and it is the part most self-study leaves out.
What to do this week
Take a free Reading and Listening diagnostic and see where you actually stand on two of the four skills; it costs nothing, needs no account, and breaks the results down by question type. Then decide your hours per week honestly, put them into the table above, and set an aim the arithmetic supports. A plan that says "7 in six weeks" is not ambitious, it is unmeasured.