31 Aug 2026 · Hayzum editors
What an ATAR actually measures
ATAR is a rank, not a score out of 100. Here is how it is produced, why scaling exists, and why calculators can only estimate.
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Hayzum helps Australian students study smarter, without accounts, paywalls, or confusing jargon. Use free tools for grades, GPA, study scores, and ATAR estimates, and read free guides that explain how your results work.
Sample estimate
Estimated ATAR — not official

9
ATAR calculators
13+
Study tools
AU
States & territories
Built for Australian students
Hayzum brings free calculators and guides together in one place, so you can estimate an ATAR, check a GPA, or understand how scaling works, without jumping between random sites. All free, with no sign-up needed.
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Estimated ATAR
91.45
ATAR
Estimate an ATAR from subject scores. Not an official rank.
Your GPA
3.70
GPA
Convert letter grades and credit hours into a university GPA.
Exam mark needed
78%
GRADES
Find the exam mark you need to hit a target grade.
Study score
41
VCE
Estimate a VCE study score from SAC and exam percentages.
Each Australian state and territory uses a different senior secondary system. Open the calculator that matches how your ATAR is produced.
If scaling, ATAR, or GPA still feels confusing, start here. These guides explain it in plain English, with Australian examples.
31 Aug 2026 · Hayzum editors
ATAR is a rank, not a score out of 100. Here is how it is produced, why scaling exists, and why calculators can only estimate.
Read guide27 Aug 2026 · Hayzum editors
Scaling is not a penalty for choosing a hard subject. Here is what it adjusts, what it ignores, and why your estimate can still move.
Read guide22 Aug 2026 · Hayzum editors
School leavers are ranked by ATAR. Once you are at university, GPA takes over. Here is how the two measures differ and when each one matters.
Read guide4 questions · Reviewed 31 Oct 2026
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