Free ATAR calculators
No signup. No ads. No data leaves your browser. Estimators for HSC, VCE and QCE Year 12 students, built by ExamExplained from publicly-released scaling reports.
ATAR calculators
HSC ATAR calculator
Estimate your ATAR from your HSC subject marks. Models the best-10-units rule (including English), UAC scaling means, and aggregate-to-percentile mapping.
Open the calculator → VICVCE ATAR calculator
Estimate your ATAR from your VCE study scores. Models the top-4 + 10% next-2 aggregate (max 210), VTAC scaling offsets, and ATAR percentile mapping.
Open the calculator → QLDQCE ATAR calculator
Estimate your ATAR from your QCE subject results. Models the top-5 General subjects aggregate (with required English), QTAC scaling, and percentile mapping.
Open the calculator →Subject calculators
HSC Physics calculators
Projectile motion, centripetal force, banking angle, gravitation, escape velocity, Kepler's third law, and orbital energy. Built for Module 5 Advanced Mechanics.
Open Physics calculators → HSCHSC Chemistry calculators
pH and pOH, weak-acid pH, buffer pH, equilibrium constant, K_sp, dilution, titration, mole conversion, Beer-Lambert, calorimetry.
Open Chemistry calculators → HSCHSC Biology calculators
Monohybrid and dihybrid Punnett squares, sex-linked inheritance probabilities, and the Hardy-Weinberg equilibrium calculator.
Open Biology calculators →How accurate are these?
These are estimators, not official tools. They use approximate scaling means from publicly-released UAC, VTAC and QTAC scaling reports, and a piecewise-linear aggregate-to-ATAR percentile curve based on widely-cited mapping points. Real scaling shifts year-to-year and is non-linear at the extremes.
For your official ATAR, look at the relevant tertiary admissions centre: UAC (NSW), VTAC (VIC), QTAC(QLD). Our calculators are designed to help you plan subject choices and check what subject marks you'd need for your target ATAR, not to replace the official calculation.