Background: Understanding knowledge utilisation in policymaking is a core task for the social and political sciences. However, limitations and biases abound in commonplace approaches to measuring such use. Consequently, we have little systematic evidence of the extent to which knowledge sources are used in policy decisions. Aims and objectives: This article discusses existing approaches to studying knowledge utilisation and introduces the analytical approach, Knowledge Utilisation Analysis (KUA), which harnesses the growing quantities of documents available online. Methods: KUA offers a four-step procedure that enables researchers to systematically compare policy documents with knowledge sources and measure the degree to which policy decisions follow or contradict relevant knowledge. Findings: The article showcases KUA in a study of Danish primary education and active labour market policies from 2016 to 2021. By analysing 1,159 documents, KUA is leveraged to study levels of knowledge utilisation across policy areas, research methods, and provider types. Discussion and conclusion: KUA contributes methodological innovation to measuring knowledge utilisation by systematically matching knowledge sources with policy decisions. KUA can, thereby, enhance empirical research on the relationship between knowledge and policy.