Kate Miller-Heidke has taken out the vote to become Australia's entry into the 2019 Eurovision song contest.

It is the first time the public has helped choose the musical act to perform at the contest.

The 37-year-old singer-songwriter performed her song Zero Gravity during the live TV final Eurovision — Australia Decides on the Gold Coast on Saturday night.

She and nine other Australian acts performed in front of a panel of judges as the public voted via text message.

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She came out on top with a total of 135 points, 87 points from the public and 48 points from the jury of industry experts.

Electric Fields took out second place with their song 2000 and Whatever on 114 points, while Sheppard came in third with On My Way on 87 points.

Miller-Heidke said she was "totally overwhelmed" by the result.

"This has been a peak experience already, and I'm dying with excitement at what's to come," she said.

"Thanks to everyone who voted, and to all the other artists who provided such a brilliant, eclectic and stiff competition.

"I've had a ball, and I'm so grateful and thrilled that I get to represent Australia at Eurovision in 2019."

Eurovision — Australia Decides creative director Paul Clarke said "Eurovision will love" Miller-Heidke.

"It's a win for out of the box brilliance, which Eurovision devours," he said.

"It's a standout song with mesmerising staging, Kate is a total original and Eurovision will love her."

The Eurovision Song Contest will be held in Tel Aviv, Israel in May.