jQuery | Convert px to em, % and pt

// http://jsfiddle.net/jnelsonin/ctfy158o/
$("#pixels").keyup(function(){      		
    var point = ($(this).val() * 3) / 4;
    var yem = point / 12;
    var percent = yem * 100;
          	
    $("#point").text(point+"pt");
    $("#yem").text(yem+"em");
    $("#percent").text(percent+"%");
});