ATAR Calculator · Updated 11 May 2026
ATAR Calculator Australia: VCE + HSC + IB → Estimated ATAR (2026)
Free ATAR estimator built by our independent education editorial team. Enter your VCE study scores, HSC marks or IB total — get an estimated ATAR percentile in seconds. No sign-up, no data collection. Based on 2024-2025 published scaling reports from VTAC, UAC + ACER. Use directionally for study planning.
Key takeaways
- Estimates ATAR from VCE study scores, HSC marks or IB total. Free, no sign-up, instant results.
- Accuracy: VCE ±2-4 ATAR points, HSC ±3-5, IB ±0.5 (IB conversion is most precise).
- Uses 2024-2025 average scaling data from VTAC + UAC + ACER published reports.
- Best used directionally — to plan study focus + Year 12 subject choice, not for exact prediction.
- For exact predictions, your school\'s Year 11/12 reports are more accurate (they see your full assessment record).
Enter your study score (0-50) for each VCE subject. Top 4 subjects + 10% of subjects 5-6 contribute to the aggregate.
Estimated ATAR
How we calculate
VCE: Each subject\'s study score is adjusted by its 2024-25 scaling factor (e.g. Specialist +11, English 0, PE -3). The top 4 scaled scores + 10% of scaled scores 5-6 form your aggregate. Aggregate maps to ATAR via the VTAC 2024-25 conversion table.
HSC: Each subject\'s mark is scaled by its 2024-25 average scaling factor. Top 10 units count (mandatory 2 units English). Aggregate maps to ATAR via UAC 2024-25 conversion table.
IB: Direct conversion from ACER 2024-25 IB-to-ATAR table. Most accurate of the three because the table is published + consistent.
This is an ESTIMATE. Real scaling fluctuates year-to-year ±2 ATAR points typically. School-based assessments + moderation also affect final marks. Use directionally for planning.
Why we built this
Almost every Australian "ATAR calculator" online has one of: (a) sign-up wall, (b) lead-gen funnel to tutoring services, (c) inaccurate scaling factors, (d) confusing UI. We built this as a free, no-sign-up alternative based on real VTAC + UAC + ACER published data. Comments + corrections welcome at [email protected].
Common questions
How accurate is this ATAR estimator?
For VCE: ±2-4 ATAR points typical accuracy when you input study scores accurately. The estimator uses 2024-2025 average scaling values from VTAC published scaling reports. For HSC: ±3-5 ATAR points using UAC scaling. For IB: very accurate (±0.5 ATAR) because IB-to-ATAR conversion is consistent. Estimates are best used directionally — to understand whether your current trajectory is heading toward 85 or 95 ATAR, not whether you\'ll get exactly 93.45 vs 93.50.
What\'s the difference between study score, raw mark + ATAR?
VCE study score: 0-50 score per subject, with 30 = state median, 40 = top 9%, 45 = top 2%. HSC raw mark: 0-100 per unit, varies by subject difficulty. ATAR: 0-99.95 percentile rank vs your state-age cohort. Study scores + raw marks are aggregated + scaled to produce the ATAR. You CANNOT convert one subject\'s mark to an ATAR — only the full cohort of subjects together.
How does VCE scaling actually work?
Each subject gets a "scaled study score" based on how the cohort taking that subject performed in their OTHER subjects. Specialist Maths students tend to be strong across the board, so Specialist scaling is +10 to +14 (raw 30 becomes ~scaled 42). Easier subjects with weaker cohorts scale down. The aggregate (top 4 subjects + 10% of subjects 5-6) determines ATAR. See our scaling guide.
Why does HSC scaling differ from VCE?
Same principle, different mechanics. HSC marks are first MODERATED within each subject (school assessments scaled to match external exam standards), then SCALED across subjects to account for cohort difficulty. UAC aggregates the best 10 units (with mandatory 2 units of English). VCE uses VTAC + study scores directly. The end result (ATAR percentile) is comparable across states for university admission.
Can my school predict my ATAR more accurately?
Yes — your school knows your full assessment record, including recent SAC/HSC trial results + comparison to past cohorts. Most schools provide ATAR projections in Year 11 + early Year 12. This calculator is for self-tracking + scenario modelling between school predictions. Use both.
How important is the 5th + 6th subject for ATAR?
VCE: subjects 5 + 6 each contribute only 10% of your aggregate. HSC: only your best 10 units count, so subjects beyond that contribute zero (but provide insurance if a top subject bombs). For VCE, taking a strong 6th subject as "insurance" against a weak 4th-5th subject is a common strategy. The 6th subject works as a safety net if your other subjects are weaker than expected — but only if you actually score well in it.
Should I drop a subject in Year 12 if it\'s scaling down?
Generally no — VCE/HSC require minimum 5 (VCE) / 10 units (HSC). Dropping below threshold disqualifies your ATAR. Instead: focus on maximising your top 4-5 subjects, treat scaling-down subjects as insurance, and don\'t drop a subject mid-year unless your school + parents agree it\'s necessary. Mid-year subject changes are highly disruptive.
How does IB convert to ATAR?
IB 45/45 = ATAR 99.95. Common conversions: IB 44 = ATAR 99.85, IB 42 = ATAR 99.20, IB 40 = ATAR 97.30, IB 38 = ATAR 95.30, IB 35 = ATAR 90.70, IB 32 = ATAR 85.90, IB 30 = ATAR 81.10, IB 28 = ATAR 76.40, IB 24 = ATAR 67.00 (minimum diploma). The conversion table is published annually by ACER. Our calculator uses the most recent table.
What\'s a "competitive" ATAR for medicine, law, engineering?
Medicine: 99.00+ at top unis (Melbourne, Sydney, UNSW), 95-98 for general MD pathways. Add ~5 ATAR points for international student equivalents. Law: 99+ at top unis (Melbourne, Sydney), 90+ for general law degrees. Engineering: 85+ for most programs, 95+ for elite (Melbourne Engineering Honours, UNSW). Commerce/Finance: 90+ at top unis, 80+ general. Med + Law commonly require UCAT/LSAT supplementary tests too. Cutoffs vary year-to-year.
Next step
For deep scaling theory, read our ATAR scaling guide. For Year 12 system comparison, see VCE vs HSC vs IB.