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Calcimator

Viral Coefficient (K-Factor) Calculator

Calculate the viral K-factor for your product or campaign. Determine if your growth is truly viral (K > 1).

Inputs

Results

K-Factor

0.5

Is Viral? (1=Yes)

0

Users After Period1,938
Growth Multiplier1.94x
Viral Cycles4
How to Use This Calculator
  1. Enter the number of existing users or viewers.
  2. Input the average number of new people each user refers or shares content with.
  3. Set the conversion rate of referred users who become active followers or customers.
  4. Review the Viral Coefficient (K-factor) - values above 1.0 indicate viral growth.
  5. Use the Projected Users at 30 Days output to forecast exponential reach.

How the result changes with Invites Per User

Invites Per UserK-FactorIs Viral? (1=Yes)
1010
353.51
656.51
9091

What each input means

Users at Start
Number of users at the beginning of the measurement period
Invites Per User
Average number of invitations or shares each user sends
Invite Conversion Rate (%)
Percentage of invitees who become active users
Viral Cycle Length (days)
Average number of days between a user joining and their invitees joining
Measurement Period (days)
Total number of days to project growth over

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Users at Start = 1000, Invites Per User = 5, Invite Conversion Rate (%) = 10, Viral Cycle Length (days) = 7 = 5 input(s) provided
  2. Calculate K-Factor
    K-Factor
    0.5 = 0.5
  3. Calculate Is Viral?
    Is Viral?
    0 = 0
  4. Calculate Users After Period
    1938 = 1938
  5. Calculate Growth Multiplier
    Growth Multiplier
    1.94 = 1.94

Engine last updated .

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