The 0 to 9 Band Scale and How the Overall Band Is Rounded
IELTS reports results on a scale from 0 to 9 in half-band steps, with a separate band for Listening, Reading, Writing and Speaking. Those four bands are averaged into an overall band and rounded to the nearest half: an average ending in .25 moves up to .5, and one ending in .75 moves up to the next whole band. Listening 7, Reading 6.5, Writing 6 and Speaking 6, for example, average 6.375 and appear on the certificate as an overall 6.5.
Because of that rounding, every target has two numbers. The overall band answers the headline requirement, while many universities, scholarship providers and professional registration bodies also set a floor for each skill, such as 6.5 overall with no skill below 6. A candidate with Writing at 5.5 can still reach 6.5 overall and fall short of that floor. Write your goal down as two lines: the overall band you need and the lowest band each skill is allowed to have.
The official band descriptions give the numbers some meaning. Band 6 is a Competent User, band 7 a Good User who handles the language well with occasional inaccuracies, and band 8 a Very Good User. Moving from 6.5 to 7 tends to feel harder than earlier steps, since examiners are looking for accuracy that holds up across every answer. At that stage most practice time goes into correcting detail, and the share of new material gets smaller.
Set your target as an overall band plus a minimum band per skill, because receiving institutions often check both.