Viral coefficient is the ability of a business to tap into an early user base and get that user base to tell other people about it.
For example, if a site has a viral coefficient of 10%, and has 1,000 users, then after one month it will gain another 100 users through viral channels.
Calculating Viral Coefficient
I * CR = K
I = Invitations
CR = Conversion rate of invitations
K = Viral coefficient
Viral Coefficient and Content Marketing
In terms of content marketing, measuring the viral coefficient often means measuring the number of shares your content receives. For example, a well-written blog post that is made easy to share over social media channels – Twitter, Facebook, LinkedIn etc, – can quickly generate interest and traffic based on the number of followers you have and the percentage of those who decide to share that content with their followers.