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Loss Per Share - Schedule of Loss Per Share (Details) - AUD ($)	6 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Schedule of Loss Per Share [Abstract]
Loss after income tax attributable to the owners of Kazia Therapeutics Limited	$ (12,552,490)	$ (10,453,811)
Weighted average number of ordinary shares used in calculating basic loss per share	1,560,213,259	425,157,427
Weighted average number of ordinary shares used in calculating diluted loss per share	1,560,213,259	425,157,427
Basic loss per share	$ (0.805)	$ (2.459)
Diluted loss per share	$ (0.805)	$ (2.459)

X

- Definition

The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator).

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The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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