How CES works
After an interaction, you ask customers to rate ease — typically agreeing or disagreeing with "It was easy to get my issue resolved" on a 1-5 or 1-7 scale. You can report the average rating or the percentage who agree it was easy. CES surfaces friction that satisfaction scores miss: repeat contacts, channel switching, and having to repeat yourself.
Why effort matters
Research popularized by the book The Effortless Experience found that reducing effort is a stronger driver of loyalty than delighting customers. People rarely reward you for going above and beyond, but they punish high-effort experiences by leaving. CES tells you where to remove friction from a support or onboarding flow.
Formula
CES = Average of all effort ratings (higher = easier), or % of customers who agree it was easy
Example: Ten responses averaging 5.8 on a 7-point ease scale gives a CES of 5.8; alternatively, if 85% agree it was easy, CES = 85%.
