Kammala jumla mai zuwa: An kira shi 2007 Danish under-19 Talent na shekara da 2009 Danish Talent na shekara. Kjær ya buga wasanni sama da 110 don Denmark, gami da halartar gasar cin kofin duniya ta FIFA a 2010 da 2018, da gasar cin kofin Turai ta UEFA a 2012 da kuma
Shekarar 2020.