Enter your IB score · official UAC Combined Rank lookup · compare against course cut-offs
Indicative only — cut-offs change annually and vary by institution. Always verify at uac.edu.au and individual university websites.
This calculator uses the official UAC conversion table, but is an independent educational tool — not an official UAC product. The table is reviewed annually and is time-limited (offers from August 2025; IB sat in Australia Nov 2022–May 2026). Always confirm the current version at uac.edu.au before relying on it for an actual application. This tool is not affiliated with UAC, VTAC, QTAC, SATAC, or TISC.
Use our free IB to ATAR Conversion Calculator to convert your International Baccalaureate Diploma score into its Australian ATAR-equivalent Combined Rank. Built on the exact official UAC conversion tables — the same ones used by every Australian state's tertiary admissions centre for 2026 university entry.
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.
UAC follows a defined set of steps to produce your Combined Rank:
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. 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.
Everyone else (IB sat outside Australia, or inside Australia before November 2022) is converted using their plain whole-number score out of 45.
These are the exact figures published by UAC, in effect for offers made from August 2025. Use this table if you sat the IB in Australia from November 2022 to May 2026.
| IBAS | Combined Rank | IBAS | Combined Rank |
|---|---|---|---|
| 45.50–45.75 | 99.95 | 34.75 | 89.30 |
| 45.00 | 99.85 | 34.00 | 88.15 |
| 44.50 | 99.70 | 33.50 | 87.45 |
| 44.00 | 99.50 | 33.00 | 86.20 |
| 43.50 | 99.25 | 32.50 | 84.90 |
| 43.00 | 98.90 | 32.00 | 84.00 |
| 42.50 | 98.55 | 31.00 | 82.00 |
| 42.00 | 98.20 | 30.00 | 79.90 |
| 41.00 | 97.30 | 29.00 | 77.65 |
| 40.00 | 96.30 | 28.00 | 75.20 |
| 39.00 | 95.25 | 27.00 | 72.65 |
| 38.00 | 94.25 | 26.00 | 69.75 |
| 37.00 | 93.00 | 25.00 | 66.90 |
| 36.00 | 91.45 | 24.25 | 65.00 |
| 35.00 | 89.75 | 24.00 | 64.25 |
| 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." This method is agreed nationally and used identically by UAC, VTAC, QTAC, SATAC, and TISC. The table is reviewed annually — always confirm the current version on uac.edu.au before relying on it for a real application.
This calculator reflects the table as published for offers made from August 2025. A small number of fine-grained mappings shift by 0.1–0.3 points most years as UAC reviews the conversion annually. Always check the live table on uac.edu.au once your official results are released, rather than relying on a cached or printed version for your real application.
If you sit IB courses but are not awarded the full Diploma, you generally won't receive a Combined Rank under these standard tables. Depending on your state, alternative pathways may exist — for example, NSW and ACT applicants who don't pass the Diploma may still be eligible for an alternative scale, and Victorian students may be eligible for a Derived IB Rank through VTAC. Contact your state's tertiary admissions centre directly for your specific situation.
Yes. The IBAS-to-Combined Rank table built into this calculator is the exact table published by UAC, in effect for offers made from August 2025, for students sitting the IB in Australia between November 2022 and May 2026. The whole-number table is also the exact UAC figures for everyone else. Always re-check uac.edu.au for the current published version before relying on it for a real application.
Your IB score is the whole number out of 45 on your official transcript. Your IBAS (IB Admissions Score) only applies if you sat the IB in Australia from November 2022 onward — it adds a decimal in 0.25 increments based on exactly where your marks fell within each subject grade band, so two students with the same IB score might receive different Combined Ranks if their IBAS differs.
Using the whole-number table, an IB score of 40 converts to a Combined Rank of 96.80. If you sat the IB in Australia from November 2022 with an IBAS, the figure depends on your exact decimal — an IBAS of 40.00 converts to 96.30, while 40.75 converts to 97.05.
For the IBAS table, both 45.50 and 45.75 convert to the maximum Combined Rank of 99.95. For the whole-number table, only a perfect score of 45 reaches 99.95.
Yes. All UAC, VTAC, QTAC, SATAC, and TISC partner institutions accept the IB Diploma as equivalent to an Australian Year 12 qualification, with your IBAS or whole-number score converted to a Combined Rank for selection purposes. Some courses may have additional requirements such as specific Higher Level subjects or aptitude tests.
If you sit IB courses but aren't awarded the full Diploma, you generally won't receive a Combined Rank under the standard tables. Depending on your state, alternative pathways may exist — contact your state's tertiary admissions centre directly for your specific situation.