Pelter has represented New Zealand at the Under-17 and Under-20 levels. He made his Under-17 debut, against Tahiti, in 2003. He was part of New Zealand's Under-20 World Cup 2007 squad, of which he was captain. He made his debut against Mexico on 8 July 2007 at the Commonwealth Stadium in Edmonton also scored New Zealand's only goal of the tournament in that match, as they failed to progress beyond the group stages.