Apparatus, systems, articles of manufacture, and methods to identify and credit media using ratios of media characteristics are disclosed herein. An example apparatus to identify media includes a memory including computer readable instructions and a processor to execute the instructions to at least determine a first ratio based on a first time interval and a second time interval of a plurality of time intervals of a monitored media signature, determine a second ratio based on a third time interval and a fourth time interval of the plurality of time intervals of the monitored media signature, generate a monitored media ratio signature based on the first and second ratios, and compare the monitored media ratio signature with a reference ratio signature to identify the media.