An impact factor is a measure of a journal’s impact in its field or discipline as calculated through the frequency of the citation of its articles. The impact factor is often represented in a ratio determined by dividing the amount of times the articles within a journal issue were cited in other literature as a whole, by the total articles the journal contains. The higher the ratio, the more important the journal will be considered in its field.
Some journals will have their impact factor available on their websites, which can often be looked up by searching it through our database UlrichsWeb or through a search engine such as Bing or Google. If you are in a science related field, you can also consult the site scijournal.org to see if it is listed there.
For more information regarding journal impact analytics we recommend checking out Scopus, for which you can find a brief introduction through this video: