Using data from 280 divorced or separated parents, we provide initial evidence of the psychometric properties and validity of the Experiences with Coparenting Scale (ECS), an 11-item semantic differential measure of divorced parents’ satisfaction with their coparenting relationships. The ECS consisted of a single factor with high internal reliability. ECS scores were significantly associated with self-reported coparenting behaviors and intentions, even after controlling for demographic variables and participants’ positive feelings about their ex-spouses. Therefore, we conclude that the ECS is a brief measure of the affective domain of postdivorce coparenting. We discuss how the ECS can be used by researchers to enhance their understanding of the development and impacts of postdivorce coparenting and by practitioners as part of family programs for divorced and divorcing parents.