Infinity on High with a 54% decline during a post-Grammy week. The album rose to number three in its third week with 79,000 units sold. In its fourth week, the disc slipped to number four and sold 67,000 copies. "Infinity on High"s sales again fell in its fifth week, moving 58,000 copies and descending to number eight on the chart. In its sixth and last week in the top ten it fell to number nine and sold 43,000 copies. In April 2007, the album was certified Platinum by the Recording Industry Association of America (RIAA), denoting the shipment of one million copies. It
Infinity on High the UK Singles Chart, with its highest position at number seventeen in Australia, becoming the third consecutive top twenty hit from "Infinity on High" in that region. The fourth and last single, "I'm Like a Lawyer with the Way I'm Always Trying to Get You Off (Me & You)" managed to reach number 68 in the US and made the top 30 in Australia. "The Carpal Tunnel of Love" was not an official single but it was released online by the band before "Infinity"'s release and was later given as an exclusive download to iTunes; it managed to reach number