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Subscriber Growth Projection Calculator

Work out subscriber growth projection instantly with clear inputs, formula shown and shareable results.

About Subscriber Growth Projection Calculator

Net growth is gross growth minus churn, compounded monthly, and the doubling time follows from the logarithm of two over the logarithm of one plus the net rate. Churn compounds against you, so cutting churn from 4% to 2% does more for a channel than adding two points of gross growth.

Formulas

Projection

subscribers = current x (1 + growth - churn) ^ months

Doubling time

months = ln(2) / ln(1 + net rate)

Worked example

With the default values below, Subscriber Growth Projection Calculator returns Projected subscribers of 19,212. Change any input above and every figure here is recalculated in your browser.

Inputs used

Subscribers nowminimum 1
12,000
Gross monthly growthaccepts 0–100 %
6 %
Monthly churnaccepts 0–100 %
2 %
Months to projectaccepts 1–120
12

Results

Projected subscribers
19,212
Net monthly growth rate
4.000%
Net subscribers added
7,212
Months to double at this rate
17.67

Step by step

  1. 1Values used
  2. 2Projection
  3. 3Doubling time
  4. 4Projected subscribers= 19,212
  5. 5Net monthly growth rate= 4.000
  6. 6Net subscribers added= 7,212
  7. 7Months to double at this rate= 17.67

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is the Subscriber Growth Projection figure worked out?

subscribers = current x (1 + growth - churn) ^ months. Net growth is gross growth minus churn, compounded monthly, and the doubling time follows from the logarithm of two over the logarithm of one plus the net rate.

Why does this matter?

Churn compounds against you, so cutting churn from 4% to 2% does more for a channel than adding two points of gross growth.

What do I need to enter?

Enter subscribers now, gross monthly growth, monthly churn, months to project. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.

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