ATAR Calculator
Estimate an ATAR rank from scaled subject scores and an aggregate.
About ATAR Calculator
The aggregate sums the best four scaled subjects plus increments from additional subjects, then that aggregate is ranked against the cohort. Because ATAR is a rank, the mapping shifts slightly each year. Subject scaling means a moderate score in a strongly scaled subject can contribute more than a high score in a weakly scaled one, which is why subject choice affects the outcome.
Formula
ATAR
Aggregate = top four scaled scores + increments; ATAR maps the aggregate to a percentile rank
- scaled score
- Subject score adjusted for the strength of the cohort taking it
- ATAR
- A rank rather than a mark, capped at 99.95
Worked example
With the default values below, ATAR Calculator returns Estimated ATAR of 95.48. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Best subject scaled scoreaccepts 0–50
- 42
- Second subject scaled scoreaccepts 0–50
- 38
- Third subject scaled scoreaccepts 0–50
- 36
- Fourth subject scaled scoreaccepts 0–50
- 34
- Fifth subject incrementaccepts 0–10
- 3.5
- Sixth subject incrementaccepts 0–10
- 3
Results
- Estimated ATAR
- 95.48
- Aggregate Score
- 156.50
- Approximate Percentile Rank
- 95.48%
- Total of the Primary Four Subjects
- 150.00
- Contribution From Increments
- 6.50
Step by step
- 1Values used
- 2ATAR
- 3Estimated ATAR= 95.48
- 4Aggregate Score= 156.50
- 5Approximate Percentile Rank= 95.48
- 6Total of the Primary Four Subjects= 150.00
- 7Contribution From Increments= 6.50
Assumptions and limits
- The result is derived only from the 6 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
- This is an approximate illustration only. Official ATAR calculation uses cohort data published annually by the relevant tertiary admissions centre and cannot be reproduced exactly in advance.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
This is an approximate illustration only. Official ATAR calculation uses cohort data published annually by the relevant tertiary admissions centre and cannot be reproduced exactly in advance.
Frequently Asked Questions
How is ATAR calculated?
Aggregate = top four scaled scores + increments; ATAR maps the aggregate to a percentile rank The aggregate sums the best four scaled subjects plus increments from additional subjects, then that aggregate is ranked against the cohort. Because ATAR is a rank, the mapping shifts slightly each year.
Why does ATAR matter?
Subject scaling means a moderate score in a strongly scaled subject can contribute more than a high score in a weakly scaled one, which is why subject choice affects the outcome.
What values do I need to enter?
This calculator takes 6 inputs: Best subject scaled score, Second subject scaled score, Third subject scaled score, Fourth subject scaled score, Fifth subject increment, Sixth subject increment. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.