NSW HSC ATAR calculator
Use this free NSW HSC ATAR and scaling calculator to estimate your ATAR from predicted or trial HSC marks using published 2025 UAC scaling data. Built by Lux Tuition, independent of UAC. Results are educational estimates, not official ATARs.
Data checked October 2026 · Uses UAC's scaling report for the 2025 HSC
Enter your HSC marks to estimate an ATAR.
Add up to 12 units of HSC subjects. We'll model the UAC scaling stage from your HSC marks using published NSW scaling patterns and return an estimated ATAR percentile. NESA moderation happens earlier, when HSC results are prepared.
See how every subject scales
For a detailed list of how each subject scales and the highest-scaling HSC courses, see our HSC subject scaling guide.
Using the calculator on results day.
Your HSC marks and your ATAR arrive on the same morning, from two different organisations.
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6am · NESA
HSC results are issued online, by email and by SMS from 6am on Wednesday 16 December 2026.
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9am · UAC
ATARs are released from 9am the same day. Log in to UAC's website with your Year 12 student number and UAC PIN.
Once your real HSC marks arrive, you can enter them in the calculator above for a closer estimate than trial marks give. It is still an estimate: it uses scaling patterns from the 2025 HSC, and 2026 scaling will differ a little with the new cohort.
Remember that the ATAR is a rank, not a mark out of 100. It shows your position relative to other students. UAC issues the official ATAR, and this calculator is independent of UAC.
Times from NESA and UAC, checked October 2026. Check both sites closer to the day in case anything changes.
How NESA moderation and UAC scaling connect.
Two organisations handle different parts of the result. NESA moderates school-based assessment marks for the HSC, while UAC scales HSC marks across courses before calculating the ATAR. Your subject choices matter, but strong performance within each course matters more than chasing a label. See UAC's official ATAR explanation.
Pick subjects you'll excel in
Scaling rewards a strong relative performance, not the subject label. A high mark in something you enjoy and commit to will usually scale better than a mediocre mark in a "high-scaling" subject you're only enduring. Talk to a tutor about the right subject mix for you.
High-scaling subjects
Mathematics Extension 2 scales highest of all, and Mathematics Extension 1, Chemistry, Physics and Economics all scale strongly, though the very top of the table is mostly small Latin and Extension language cohorts. We offer specialist tutoring for Chemistry, Physics, and Maths Extension 1.
Standard scaling
English Advanced scales solidly and Biology sits around the middle of the table. Both are worth taking well, because strong, consistent marks in them still add real weight to your aggregate. We tutor English Advanced and Biology too.
What students & parents say
The people who'll help you hit your target ATAR.
High-achieving and passionate about helping students succeed.
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Diva Parmar
ATAR 99.00Girraween High SchoolBachelor of Actuarial Studies / Commerce, UNSW
Maths Chemistry -
Heyu Liu
ATAR 97.75Girraween High SchoolBachelor of Arts / Law, UNSW
English Maths Biology -
Ishika Verma
ATAR 97.35Bachelor of Engineering (Honours – Aerospace Engineering), UNSW
English Maths -
Kirsten Marcello
ATAR 97.10Penrith Selective High SchoolBachelor of Commerce, UNSW
English -
Abhay Dhanger
ATAR 96.25Parramatta High SchoolBachelor of Actuarial Studies and Commerce, UNSW
English Maths Physics -
Pooja Undrakonda
ATAR 95.90Cheltenham Girls High SchoolBachelor of Biomedical Science, University of Notre Dame
English Maths -
Ravdeep Behl
ATAR 95.20Penrith Selective High SchoolBachelor of Data Science and Decisions, UNSW
English Maths -
Tristan Youdell
ATAR 97.20Trinity Catholic College AuburnBachelor of Actuarial Studies and Computer Science, UNSW
Maths
ATAR calculator questions
Will I still get a good ATAR if I don't pick high-scaling subjects?
Yes. Your ATAR depends far more on how well you perform relative to your cohort than on which subjects you pick. A strong, well-earned mark in a subject you enjoy and can commit to will typically outperform a mediocre mark in a "high-scaling" subject you're only taking for the label.
What is the ATAR?
The ATAR (Australian Tertiary Admission Rank) is a number between 0.00 and 99.95 that shows how you rank against every other HSC student in your state, not just your own school or subjects. An ATAR of 90.00, for example, means you've placed in the top 10% of the entire cohort.
What are scaled marks?
UAC scaling converts HSC marks from different courses onto a common scale using the relative performance of each course cohort. The resulting scaled marks are used to build the aggregate behind your ATAR, rather than comparing raw marks directly.
How does scaling work?
UAC scaling is separate from NESA moderation. NESA moderates school-based assessment marks so schools can be compared while preserving student rank; UAC then uses HSC marks and course scaling statistics to calculate scaled marks and the ATAR. Read our detailed HSC scaling guide for the full process.
How accurate is this calculator?
This provides an estimate based on typical scaling patterns and should be used as a guide only. Actual scaling varies each year based on cohort performance.
HSC study strategy guides.
HSC tutoring near you
We tutor HSC students from Blacktown and across the surrounding suburbs. Find your local page below.
Need HSC tutoring help?
Our tutors averaging 97.1 ATAR understand scaling inside-out. Enquire about a free class in Chemistry, Physics or Maths.