List Growth Rate Calculator

Formula

The formula to calculate the list growth rate is:

\[ \text{GR} = \left( \frac{\text{FS} - \text{IS}}{\text{IS}} \right) \times \left( \frac{365}{\text{TP}} \right) \times 100 \]

Where:

\( \text{GR} \) is the list growth rate (%)
\( \text{FS} \) is the final list size
\( \text{IS} \) is the initial list size
\( \text{TP} \) is the time period over which the growth is measured (days)

What is List Growth Rate?

List growth rate is a metric used to measure the rate at which a list (such as an email subscriber list, customer base, or social media following) is growing over a specific time period. It is an important indicator of the health and expansion of a business’s outreach or marketing efforts.

Example Calculation

Let's assume the following values:

Final List Size (\( \text{FS} \)): 1500
Initial List Size (\( \text{IS} \)): 1000
Time Period (\( \text{TP} \)): 30 days

Step 1: Subtract the initial list size from the final list size:

\[ \text{FS} - \text{IS} = 1500 - 1000 = 500 \]

Step 2: Divide by the initial list size:

\[ \frac{500}{1000} = 0.5 \]

Step 3: Multiply by the ratio of 365 days to the time period:

\[ 0.5 \times \frac{365}{30} \approx 6.083 \]

Step 4: Multiply by 100 to convert to a percentage:

\[ 6.083 \times 100 \approx 608.33 \]

Therefore, the list growth rate is approximately 608.33%.