Overview
For UK universities, A-Levels are the default currency: their depth in three subjects maps neatly onto specialist degrees, and admissions teams know exactly how to read them. The IB is well understood and widely accepted too, with offers expressed in total points and specific higher-level subject conditions. Neither is "better" for the UK; A-Levels suit early specialisation, while the IB suits breadth, and both can win the same place.
How UK admissions read each
UK offers are typically made in the currency of your qualification. For A-Levels that means grade conditions like a specific set of A*/A grades, often naming required subjects. For the IB it means a total out of 45 plus higher-level (HL) subject conditions, for example a points total with named HL grades.
Because most UK degrees are specialist from year one, admissions value depth in the relevant subjects. Three A-Levels give that depth directly. The IB delivers depth through its three HL subjects while keeping breadth across the rest, which is why HL choices matter so much in an IB offer.
Depth, specialisation and subject fit
For specialist degrees — engineering, medicine, single-subject sciences, maths — universities often expect specific subjects at high grades. With A-Levels you demonstrate this straightforwardly through your three choices. With the IB, you must ensure the required subjects sit at HL, since standard level rarely satisfies a demanding subject requirement.
This is the practical crux: an IB student aiming at a specialist UK degree needs to plan HL subjects carefully. See IB subject combinations and, for the A-Level side, the best A-Level subject combinations and how many A-Levels you need.
How marking differs (and why it matters)
Understanding assessment helps you target grades. A-Levels are marked against published mark schemes: method and accuracy marks in quantitative subjects and levels-of-response bands in essays, where an examiner places your work in a band. The IB uses markbands and rubrics across exams and internal assessment, with each subject scored 1–7.
Either way, practising against real criteria protects marks you have earned. You can run exam-style answers through our AI marking tool and browse coverage on the subjects page.
Points conversion and offers
The IB is accepted through published points requirements rather than a single fixed tariff, and requirements differ by university and course. Always check each university's entry requirements and the official specification, because these change year to year.
| Aspect | A-Levels | IB |
|---|---|---|
| Offer currency | Grades (e.g. A*AA), subjects named | Total /45 + HL subject conditions |
| Depth | Three subjects in depth | Three HL subjects + breadth |
| Specialist-degree fit | Direct via chosen subjects | Requires the right subjects at HL |
| Familiarity to UK admissions | Very high | High, widely accepted |
| Conversion | Native | Points-based, per university |
Who each suits for the UK
Choose A-Levels if you already know your direction and want to specialise early into a UK degree; the depth aligns cleanly with specialist courses. Choose the IB if you value breadth, are less certain of your path, or want the writing and research skills its core builds — just plan HL subjects around your likely degree.
How this fits the wider picture
If you are also weighing the US, see [IB vs A-Level for US universities](/blog/ib-vs-a-level-for-us-universities), and for a three-way view read [IB vs AP vs A-Level](/blog/ib-vs-ap-vs-a-level). The general [IB vs A-Level](/blog/ib-vs-a-level) comparison and [our pillar guide to choosing an exam board](/blog/how-to-choose-an-exam-board-2026) round out the picture, alongside [science vs humanities](/blog/science-vs-humanities-a-level-which-path). Explore IB support on the [IB hub](/ib) and [IB courses](/ib/courses).
Frequently asked questions
Neither is universally preferred; both are accepted at leading universities. A-Levels are the more common currency and map directly onto specialist degrees, while the IB is welcomed for its breadth. Check each university's stated requirements.
Do UK universities prefer A-Levels or the IB?
How is the IB converted to a UK offer?
UK offers for the IB are usually expressed as a total out of 45 plus specific higher-level subject grades. Conversion and required points vary by university and course, so consult the official specification.
Is the IB harder than A-Levels for UK entry?
They are demanding in different ways: the IB spreads a heavy, sustained load across six subjects plus core, while A-Levels concentrate difficulty into deep terminal exams. Grade outcomes depend on the individual, not the label.
Which is better for a specialist degree?
A-Levels make specialist depth easy to show through your three subjects. The IB works well too, provided the required subjects are taken at higher level, so plan HL choices around your target degree.