IB Diploma Explained (and UCAS Points)

Quick answer: The International Baccalaureate (IB) Diploma is a two-year, Level 3 qualification for ages 16 to 19. You study six subjects (three Higher, three Standard) plus a core, scored out of 45. For UCAS, points are added per component — not from your total out of 45.

That is the short version. Below, we walk through exactly how the IB works and, just as importantly, exactly how those grades become UCAS Tariff points — so the number you end up with feels earned, not guessed.

What is the IB Diploma?

The International Baccalaureate Diploma is an international, two-year, Level 3 qualification (SCQF Level 6 in Scotland) for students aged 16 to 19. It is run by the International Baccalaureate Organisation and is taught in schools and colleges around the world, including hundreds in the UK.

What makes it different is its breadth. Instead of narrowing down to three or four subjects, you keep six going right to the end, plus a compulsory core. In short, it is:

• Academic and broad — you study across languages, sciences, humanities and maths.
• Two years long — usually taken in Years 12 and 13 (or equivalent).
• Internationally recognised — accepted by universities in the UK and worldwide.
• A full programme, not a collection of separate exams — the core ties it together.

If you are still getting to grips with the basics, our guide to what UCAS points are is a good companion read before you go further.

How the IB Diploma is structured

The IB is built around six subject groups: studies in language and literature, language acquisition, individuals and societies, sciences, mathematics, and the arts. You pick one subject from each group (with a little flexibility in the arts), giving you six subjects in total.

Those six split into two levels:

• Three at Higher Level (HL) — studied in more depth, with more teaching hours.
• Three at Standard Level (SL) — still rigorous, but covered in less detail.

On top of the six subjects sits the core, which is what really sets the IB apart from routes like A-levels. The core has three parts:

• Theory of Knowledge (TOK) — a course about how we know what we know, assessed by an essay and a presentation.
• The Extended Essay (EE) — a 4,000-word independent research project on a topic you choose.
• CAS (Creativity, Activity, Service) — a programme of activities outside the classroom.

TOK and EE are graded A to E and can earn you both Diploma bonus points and UCAS points. CAS is required to pass the Diploma but is not graded, so it does not add UCAS points. That breadth — six subjects plus a research essay and a reasoning course — is exactly why the IB feels heavier than some other routes, and why it is so well respected.

How the IB Diploma is graded (out of 45)

Each of your six subjects is scored on a scale of 1 to 7, where 7 is the top grade. Six subjects at a maximum of 7 each gives you up to 42 points.

The final three points come from the core. TOK and EE are graded A to E, and together they can add up to 3 bonus points through a combined matrix. Add those to your 42 and you reach the famous maximum of 45 points.

You need at least 24 points to pass the full Diploma, alongside meeting the core and minimum-grade requirements. Here is the subject scale at a glance:

It is worth keeping the two numbers separate in your head. Your score out of 45 tells universities how you performed overall. Your UCAS points, which we cover next, are worked out a completely different way. If you want the bigger picture on how the Tariff works generally, see how UCAS points are calculated.

How the IB converts to UCAS points

Here is the single most-misunderstood fact about the IB and UCAS, so we will say it plainly:

Your UCAS points are summed per component — not converted from your total out of 45.

In other words, there is no table that turns "38 points" into one Tariff figure. Instead, UCAS gives points to each Higher Level subject, each Standard Level subject, and each graded core element. You add them all up to get your Tariff total.

Higher Level subjects carry the most weight:

Standard Level subjects earn fewer points, which makes sense given the lighter study load:

The core counts too. TOK and the Extended Essay are each graded A to E, and each one is worth: A = 12, B = 10, C = 8, D = 6, E = 4.

So your full Tariff total is: HL points + SL points + TOK points + EE points. If you would rather skip the arithmetic, our IB UCAS points calculator adds it up for you in seconds, and the full IB UCAS points table lays out every value in one place.

A worked IB-to-UCAS example

Numbers feel real once you see them built up step by step, so let's walk through one realistic profile. Imagine you finish with HL grades of 6, 6, 5, SL grades of 6, 5, 5, a TOK grade of B and an EE grade of B.

Here is the maths, component by component:

• HL 6 = 48, HL 6 = 48, HL 5 = 32 → 128 points
• SL 6 = 24, SL 5 = 16, SL 5 = 16 → 56 points
• TOK B = 10
• EE B = 10

Add them together: 128 + 56 + 10 + 10 = 204 UCAS points.

That is a solid, in-range total — comfortably enough for a wide spread of courses. Notice how the Higher Level grades did most of the heavy lifting, which is why HL choices matter so much when you are planning. Once you have your own figure, it is worth checking what you can study with your points to see where it realistically puts you.

Do universities actually use IB UCAS points?

Honest answer: sometimes, but often not directly. Many IB-recognising universities make offers in IB points plus specific Higher Level grades — for example, "32 points overall, including 6, 6, 5 at Higher Level" — rather than in UCAS Tariff points.

That is not bad news, just something to check. Your Tariff total is still genuinely useful: it lets you compare the IB against A-levels, BTECs and other routes on a level playing field, and some courses (and many Clearing vacancies) do quote Tariff points directly.

The key thing is to read each course's entry requirements carefully and meet the version they actually ask for. There is never any double-counting, and offers vary from one university to the next. For more on this, see do all universities use UCAS points and how many UCAS points you need.

Is the IB right for you? (and next steps)

If you have a choice still to make, here is the IB at a glance against the alternatives. The IB rewards breadth — six subjects plus a research essay and a reasoning course — while A-levels and BTECs reward specialism and, in the BTEC case, a more practical, coursework-led approach.

• Choose the IB if you enjoy keeping options open, like writing and independent research, and want an internationally portable qualification.
• Lean to A-levels if you prefer to go deep in a few favourite subjects.
• Consider a BTEC if you learn best through applied, hands-on assessment.

There is no wrong choice here — only the one that fits how you like to learn. Whatever route you are on, the most useful next step is to turn your grades into a number and then check it against real requirements.

Calculate your IB points now

You can also convert IB grades to UCAS points if you are applying from outside the UK.

IB Diploma FAQ

What is a good IB score?

A total of 24 points passes the full Diploma, and the global average sits around 30. Strong applicants score 36 to 40 and above. For UCAS, remember your Tariff points are summed per component, so a higher score out of 45 reliably means more points.

How many UCAS points is the IB worth?

It depends on your grades, because UCAS adds points per component. A Higher Level 7 is worth 56 points, a Standard Level 7 is worth 28, and each graded core element (TOK and EE) adds up to 12. A typical Diploma lands roughly between 120 and 280 points.

How many UCAS points is 45 IB points?

There is no single conversion — UCAS does not map your total out of 45 to one figure. A perfect Diploma (three HL 7s, three SL 7s, plus top core grades) adds up to roughly 280 UCAS points when each component is counted separately.

Is the IB harder than A-levels?

The IB is broader, not simply harder. You keep six subjects plus a core, instead of specialising in three or four A-levels. Many students find the workload steadier but heavier overall. The right choice depends on whether you prefer breadth or focus.

Do all universities accept the IB Diploma?

Yes, UK universities widely recognise the IB Diploma. Most, though, make offers in IB points and specific Higher Level grades rather than UCAS Tariff points — so always check each course's exact entry requirements before you apply.