August 16, 2021 Sara Millis Marketing Terms, 'C' of marketing terms Marketing Conversion: How to effectively measure the rate of conversion in marketing August 16, 2021 Sara Millis Marketing Terms, 'C' of marketing terms A conversion is the moment at which a person completes the desired action on receiving a marketing message. Examples of a conversion might be; a sign up for an email list, a purchase, or sharing a message on social media, or email.