This study examined learners' calibration of their executive function performance and the contribution of learners' calibration accuracy to their self-regulated learning. A measure of calibration bias of EF performance is introduced and an evaluation of the utility of the measure is presented. Direct and indirect measures of EF, an assessment of students' metacognitive strategy use, and academic achievement information were obtained from a sample of 189 college learners. Findings revealed that students who were overconfident in their appraisal of their EF performance obtained significantly higher scores on a criterion self-report measure of EF. Evaluation of hierarchical regression analyses revealed that learners' ability to monitor their EF performance predicted criterion measures of EF and metacognitive strategy use, and accounted for unique variance in both outcomes after controlling for their academic achievement. The utility of this calibration bias measure as well as implications for future research are discussed.