FullCalculator

Viral Coefficient Calculator

Basic Viral Coefficient

Growth Projection

Formula

K-Factor = Avg Invites per User x Invite Conversion Rate

Frequently Asked Questions

What is the viral coefficient?
The viral coefficient (K-factor) measures how many new users each existing user generates through referrals. K = invitations sent x conversion rate. A K-factor above 1 means viral growth where each user brings in more than one new user.
What is a good viral coefficient?
A K-factor above 1.0 indicates true viral growth. Values between 0.5-1.0 show strong referral activity but not self-sustaining growth. Most products have K-factors well below 1.0.

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