Studying the International Baccalaureate (IB) in Australia does not lock you out of local university offers. Your IB results are converted into an ATAR-equivalent (also called a Combined Rank) so admissions centres can compare IB and non-IB applicants on the same scale. This guide explains how the ib to atar conversion works, shows the official conversion table, and flags what you should confirm with your admissions centre.
How the IB to ATAR conversion works
Your IB Diploma score is marked out of 45. Australian tertiary admissions centres (TACs) take that score and convert it to an ATAR-equivalent using published conversion tables. For Australian universities, this converted rank is what appears in your offer assessment, not the raw IB score. The ib to atar conversion is not a fixed formula you can calculate by hand: it is set by the TACs each admission cycle, so always use the current published table.
Official IB to ATAR conversion table
Below is the official VTAC conversion for IB results completed outside Australia, for the 2025-26 selection year (source: official VTAC report). Please note that this specific table is for that selection year and use case. Applicants must confirm the current conversion with their admissions centre.
| IB score | ATAR-equivalent |
|---|---|
| 45 | 99.95 |
| 44 | 99.70 |
| 43 | 99.25 |
| 42 | 98.55 |
| 41 | 97.80 |
| 40 | 96.80 |
| 39 | 95.75 |
| 38 | 94.75 |
| 37 | 93.70 |
| 36 | 92.30 |
| 35 | 90.60 |
| 34 | 88.85 |
| 33 | 87.45 |
| 32 | 84.90 |
| 31 | 83.10 |
| 30 | 80.90 |
| 29 | 78.85 |
| 28 | 76.45 |
| 27 | 73.90 |
| 26 | 71.35 |
| 25 | 68.10 |
| 24 | 65.70 |
IB to ATAR: Key Facts
Quarter-point conversions in Australia
Conversions issued through Australian IBAS processes can be expressed to the nearest quarter point rather than the whole-number values in the table above. That means your official converted rank can differ slightly from what the whole-number table suggests. Do not assume either version is your final result: the figure your admissions centre publishes for your case is the one that counts.
What to confirm with your admissions centre
- Which conversion table applies to your IB completion year and location.
- Whether your TAC uses whole-number or quarter-point values.
- The current selection-year table before relying on it for course cut-offs.
The ib to atar conversion is straightforward once you know where to look: find your IB score, read the official table, and confirm the current numbers with your TAC. To estimate where you might land before results day, try the freeATAR Calculator