Definition
Metric estimating how many new users each user brings.
Examples
A K-factor above 1 indicates viral growth.
Origin
Modern business/startup term; used as practical shorthand in product, growth, and investing.
Use it in Nautis
Track k-factor alongside everything else in your startup.
Nautis brings planning, fundraising, finance, and operations into one AI-native workspace — so concepts like k-factor stop being spreadsheet trivia and start showing up where decisions get made.