Academic impact is "the demonstrable contribution that excellent research makes to academic advances, across and within disciplines, including significant advances in understanding, methods, theory and application"
Research Councils UK Pathways to Impact
Impact is the effect research has beyond academia and consists of " benefits to one or more areas of the economy, society, culture, public policy and services, health, production, environment, international development or quality of life, whether locally, regionally, nationally, or internationally" (paragraph 62) and as "manifested in a wide variety of ways including, but not limited to: the many types of beneficiary (individuals, organizations, communities, regions and other entities); impacts on products, processes, behaviors, policies, practices; and avoidance of harm or the waste of resources." (paragraph 63)
Higher Education Funding Council for England: 2014 REF: Assessment framework and guidance on submissions.
These two definitions were shared in the article below.
A tool for finding the online impact of your research. Impactstory tracks mentions on Twitter, blogs, news outlets, and more. You can join for free using your ORCID. Learn more at https://impactstory.org.
Kudos is a free service for researchers to increase readership and the impact of your research. With the creation of your Kudos account and linking your author identifiers, like ORCID, you'll be able to share your work and retrieve multiple metrics relating to your publications including page views, citations, full text downloads, and social media metrics (alternative (alt) metrics).