Exam tool
Scientific calculator
The functions of the calculators approved for the HKDSE — fractions, Deg/Rad/Gra trigonometry, logs, powers, nPr/nCr and memory — for working through mocks when your own calculator isn't to hand. Also available inside the timed exam runner.
Not an approved exam device
HKEAA approval applies to physical calculators only (models pad-printed "H.K.E.A.A. APPROVED", such as the Casio fx-50FH II or fx-3650P II). This online tool matches the functionality of those models for practice, but no website or app may be used in the real exam hall — bring an approved physical calculator on the day. Dsetopia is not affiliated with the HKEAA or any calculator manufacturer.
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Click the pad or Tab to it, then type: digits and + − × ÷, Enter to evaluate, Esc to clear, ← → to move.