CPS may refer to any of the following:
1. Short for characters per second, CPS is a data transfer rate estimated from the bit rate and the character length. For example, at 2400 bps, 8-bit characters with start/stop bits (for a total of ten bits per character) are transmitted at a rate of approximately 240 characters per second (cps).
3. Short for cost per sale, CPS is where an advertiser only pays if a sale is made.