Formule utilisée :

function metreToUS(metric) {

var grandeur = parseFloat(metric.replace("m","."));
var us = grandeur * 3.2809;
var feet = parseInt(us);
var frIn = Math.round(12*(us - feet) *10)/10;
var inche = parseInt(Math.round(12*(us - feet)));

if(inche == 12) {inche = 0; feet++;}
if(frIn-parseInt(frIn)==0.5)
inche = inche+0.5;
return feet+"'"+inche+'"';

}