This article proposes a scale for the evaluation of democracy by experts. Its starting point is the democratic audit carried out by the Human Rights Centre of the University of Essex (UK), based on five dimensions or spheres: citizenship, laws and rights; political representation; governance and accountability; civil society, and international aspects. For validation, the scale of 57 clauses has been applied to a voluntary sample of more than one hundred experts in two consecutive years. Exploratory and confirmatory factorial analyses have revealed other latent dimensions in the evaluation of the Spanish system and a reduced version of 14 statements has been proposed for application in questionnaires addressed to the general population. Finally, validity and reliability are assessed with highly positive results.