The title compound, C(11)H(16)O(2), adopts a semifolded conformation with the delta-lactone and cyclohexane rings almost perpendicular to one another. The beta-methyl substituent occupies an axial position with respect to the cyclohexane ring. The delta-lactone moiety adopts a slightly distorted half-chair arrangement, while the cyclohexane ring exists in an almost ideal chair conformation.