Enterprise architecture supports the analysis and design of business-oriented systems through the creation of complementary perspectives from multiple viewpoints over the business, information systems and technological infrastructure, enabling communication between stakeholders. However, enterprise architecture modelling languages lack representation schemas that support the computable assessment of its models. This paper applies model transformation to address this issue. The proposed approach translates models specified using ArchiMate into OWL. The resulting ontological representation is therefore computable, allowing for the analysis of the consistency and completeness of the enterprise architecture models. The applicability of the approach is shown through a case study.