Convert your International Baccalaureate Diploma score into its Australian ATAR-equivalent Combined Rank. Built on the exact UAC conversion tables used by every Australian tertiary admissions centre for 2026 university entry.
Everything current IB Diploma students need to know about how their score becomes a Combined Rank for Australian university entry in 2026.
Australian universities don't compare your IB score directly against ATARs. Instead, the Universities Admissions Centre (UAC) — on behalf of all state tertiary admissions centres — converts your IB result into an ATAR-equivalent figure called the Combined Rank. For every admissions purpose nationwide, the Combined Rank is treated identically to an ATAR.
If you sat the IB inside Australia from November 2022 onward (and before May 2026), you receive an IB Admissions Score (IBAS) in 0.25 increments — a more precise figure than your raw diploma score. Everyone else (IB sat outside Australia, or inside Australia before November 2022) is converted using their plain whole-number score out of 45.
The IB Organisation supplies UAC with detailed data on exactly where your mark fell within each subject's grade band. If a Grade 6 in Biology SL spans marks 60–69 and you scored 68, that's a "high" position in the band. This is averaged across your six subjects and rounded to the nearest 0.25 to produce your IBAS — distinguishing students who got the same whole-number score but performed differently within their grades.
The IBAS-to-Combined Rank table is reviewed annually by all Australian tertiary admissions centres. The table currently in effect applies to offers made from August 2025, covering IB sat in Australia between November 2022 and May 2026. A small number of "fine-grained" mappings shift by 0.1–0.3 ATAR points most years — always check uac.edu.au for the latest published version before relying on a number for an actual application.
Yes. The conversion method is agreed nationally by UAC, VTAC, QTAC, SATAC, and TISC, so your Combined Rank (or VTAC's equivalent "Notional ATAR") is the same number no matter which state's admissions centre processes your application. This means you can confidently apply to universities in any state with a single converted score.
They're different rather than directly comparable in difficulty. The ATAR is a percentile rank — only the top 0.05% can ever score 99.95. The IB is a criterion-based score out of 45 — there's no theoretical cap on how many students could score 45 in a given year. The IB also mandates breadth across six subject groups plus Theory of Knowledge and the Extended Essay, which some students find demanding in a different way to ATAR specialisation.
These are the exact figures published by UAC, in effect for offers made from August 2025. Use the IBAS table if you sat the IB in Australia from November 2022; otherwise use the whole-number table.
| IBAS | Combined Rank | IBAS | Combined Rank |
|---|---|---|---|
| 45.50–45.75 | 99.95 | 34.75 | 89.30 |
| 45.25 | 99.90 | 34.50 | 88.85 |
| 45.00 | 99.85 | 34.25 | 88.50 |
| 44.75 | 99.75 | 34.00 | 88.15 |
| 44.50 | 99.70 | 33.75 | 87.80 |
| 44.25 | 99.60 | 33.50 | 87.45 |
| 44.00 | 99.50 | 33.25 | 86.80 |
| 43.75 | 99.35 | 33.00 | 86.20 |
| 43.50 | 99.25 | 32.75 | 85.55 |
| 43.25 | 99.10 | 32.50 | 84.90 |
| 43.00 | 98.90 | 32.25 | 84.45 |
| 42.75 | 98.75 | 32.00 | 84.00 |
| 42.50 | 98.55 | 31.50 | 83.10 |
| 42.25 | 98.35 | 31.00 | 82.00 |
| 42.00 | 98.20 | 30.50 | 80.90 |
| 41.50 | 97.80 | 30.00 | 79.90 |
| 41.00 | 97.30 | 29.00 | 77.65 |
| 40.50 | 96.80 | 28.00 | 75.20 |
| 40.00 | 96.30 | 27.00 | 72.65 |
| 39.00 | 95.25 | 26.00 | 69.75 |
| 38.00 | 94.25 | 25.00 | 66.90 |
| 37.00 | 93.00 | 24.25 | 65.00 |
| 36.00 | 91.45 | 24.00 | 64.25 |
| 35.00 | 89.75 | Use the calculator above for any value at 0.25 increments | |
| IB Score | Combined Rank | IB Score | Combined Rank |
|---|---|---|---|
| 45 | 99.95 | 34 | 88.85 |
| 44 | 99.70 | 33 | 87.45 |
| 43 | 99.25 | 32 | 84.90 |
| 42 | 98.55 | 31 | 83.10 |
| 41 | 97.80 | 30 | 80.90 |
| 40 | 96.80 | 29 | 78.85 |
| 39 | 95.75 | 28 | 76.45 |
| 38 | 94.75 | 27 | 73.90 |
| 37 | 93.70 | 26 | 71.35 |
| 36 | 92.30 | 25 | 68.10 |
| 35 | 90.60 | 24 | 65.70 |
Source: Universities Admissions Centre (UAC), "University applicants with an International Baccalaureate Diploma," IBAS to Combined Rank conversion table applicable for offers made from August 2025. This conversion method is agreed nationally and used identically by UAC, VTAC, QTAC, SATAC, and TISC. The table is reviewed annually and is subject to change — always confirm the current version on uac.edu.au before relying on it for a real application.
The step-by-step process from your final IB exams to a usable Combined Rank for 2026 university applications.
Your six subjects are each graded from 1 to 7 (42 points max), plus up to 3 bonus points from Theory of Knowledge (TOK) and your Extended Essay (EE), for a maximum total of 45.
IB results are typically released in early January for the November session and early July for the May session. Your IB Diploma Coordinator must authorise the release of your detailed results to UAC (or your state's admissions centre) for the conversion to take place.
If you sat the IB in Australia from November 2022, fine-grained subject data lets UAC determine exactly where your mark sits within each grade band, producing your IB Admissions Score in 0.25 increments. Students sitting outside Australia (or before November 2022) skip this step and use their whole-number score directly.
UAC applies the nationally agreed conversion table (the same one used in this calculator) to translate your IBAS or whole-number score into a Combined Rank between 0.00 and 99.95 — directly comparable to an ATAR.
Your Combined Rank is used exactly like an ATAR in your UAC, VTAC, QTAC, SATAC, or TISC application — compared against published cut-offs for the courses you've listed. If you're not awarded the full Diploma, you may instead be eligible for a separate IB-without-Diploma scale (NSW/ACT) or a Derived IB Rank (Victoria), depending on your state and circumstances.
Just like ATAR students, IB students may be eligible for selection rank adjustments (bonus points) for specific subjects, equity circumstances, or other schemes. Some universities also list IB-specific subject prerequisites — for example, requiring HL Mathematics — even where the Combined Rank alone would be sufficient.
Practical guidance to make sure your Combined Rank works as hard as possible for your university applications.
Make sure your IB Diploma Coordinator submits the request to release your results to UAC (or your relevant state centre) well before key application deadlines — delays here can hold up your entire offer.
If a course has subject prerequisites (e.g. HSC Mathematics Extension 1), check the published IB-to-HSC (or IB-to-VCE) course equivalence tables to confirm your HL/SL subjects satisfy them.
The conversion table is reviewed annually. If you're planning ahead using a predicted IB score, treat any ATAR-equivalent figure as indicative — confirm the live table on uac.edu.au once your actual results are in.
Theory of Knowledge and your Extended Essay contribute up to 3 bonus points to your total score — and that total directly drives your Combined Rank. Treat these components with the same seriousness as your six subjects.
If you don't meet the requirements for the full Diploma, you may still have options — including approaching universities directly, NSW's Schools Recommendation Scheme, or (in Victoria) a Derived IB Rank — so don't assume an incomplete Diploma rules out university entirely.
Answers to the questions IB Diploma students ask most often about converting their score for 2026 Australian university entry.
This calculator uses the official UAC IBAS-to-Combined Rank conversion table in effect for offers made from August 2025, applicable to IB students sitting exams in Australia between November 2022 and May 2026. It is provided as a free educational planning tool. Always confirm your actual Combined Rank with UAC or your relevant state tertiary admissions centre once your official results are released.