Konta, who is yet to drop a set in the tournament, broke the Dane midway through the first set with a smoking drop shot and never looked back, keeping the pressure up throughout the 75-minute contest.
The ninth seeded 25-year-old, the female contingent in a British charge into the second week at Melbourne Park, joined male compatriots Andy Murray and Dan Evans in the fourth round when Wozniacki put a backhand wide.
The Sydney-born Konta, a semi-finalist here last year, will next face 30th seed Ekaterina Makarova as she seeks to give Britain its first women's grand slam singles champion in four decades.
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(Editing by Sudipto Ganguly)
