The European Food Safety Authority (EFSA) carried out a public consultation to receive input from the scientific community and all interested parties on a draft scientific opinion on the energy conversion factor for D-tagatose for labelling purposes, prepared by the EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA Panel) and endorsed by the Panel for public consultation at its Plenary meeting on 29 June 2016. The written public consultation for this document was open from 18 July to 12 September 2016. EFSA received comments from eight interested parties. EFSA and its NDA Panel wish to thank all stakeholders for their contributions. The current report summarises the outcome of the public consultation, and includes a summary of the comments received and how the comments were addressed. The NDA Panel prepared an updated version of the scientific opinion on the energy conversion factor for D-tagatose for labelling purposes taking into account the comments received. The Opinion was discussed and adopted at the NDA Plenary meeting on 25 October 2016, and is published in the EFSA Journal.