A previous study by Murray et al. (2018) designed and validated a multi-item instrument for the assessment of violent ideations, the “Violent Ideations Scale” (VIS) in a sample of older Swiss adolescents (n=1276) who were part of the z-proso study. However, the final 12-item scale contained no items relating to sexual violence. The current study explores an expansion of the original VIS to include further items related to the ideation of sexual violence and seeks to investigate the psychometric properties of this new version: the Violent Ideations Scale-Expanded (VIS-X). The VIS-X was completed by participants in the latest wave of the z-proso study. The sample consisted of 1177 participants (597 females and 580 males), aged 19 to 22. Exploratory factor analysis was conducted in a calibration sample and confirmatory factor analysis in a validation sample to evaluate dimensionality resulting in two subscales: one containing items related to general violent ideations (VIS-X-Gen) and one related to violent sexual ideations (VIS-X-Sex). Cronbach’s Alpha ( =.96 for both subscales) and Composite Reliability (CR = .90 for the VIS-X-Gen subscale and .80 for the VIS-X-Sex subscale) indicated good reliability values. A multi-group confirmatory factor analysis revealed that measurement invariance held across genders. A Nomological analysis showed significant positive relationships with relevant constructs of low self-control, bullying, intimate partner violence and consumption of problematic media content. The results support the use of the VIS-X in measuring sexual violent ideations alongside other forms of violent ideations.