Knowles Corporation revenue for the last year amounted to 553.50 M USD, the most of which — 300.00 M USD — came from its highest performing source at the moment, Precision Devices, the year earlier bringing 221.40 M USD. The greatest contribution to the revenue figure was made by United States — last year it brought Knowles Corporation 236.00 M USD, and the year before that — 161.40 M USD.