Two men who used the dating app Tinder to groom underage girls have been jailed after they were exposed by a group of Melbourne university students.

The creators of the "Tinder Experiment" set up a fake profile of a 15-year-old girl in a bid to expose paedophiles grooming girls online.

A photo posted by the students to catch paedophiles grooming underage girls.

They then secretly filmed conversations and face-to-face meetings with the men before shaming them online.

Those videos were removed and their website shut down by police, but a specialised task force focused on internet-based child exploitation offences was able to use the information from the "experiment".