Relative Growth Rate Calculator









Formula

The formula to calculate the Relative Growth Rate (RGR) is:

\[ \text{RGR} = \frac{\ln(S2) - \ln(S1)}{t2 - t1} \]

Where:

What is Relative Growth Rate?

Relative Growth Rate (RGR) measures the rate at which a population, organism, or system grows in relation to its initial size over a specific time period.

It is calculated using the natural logarithm of the ratio of sizes at two different times divided by the time difference between those two times.

Example

If:

Calculate the Relative Growth Rate:

\[ \text{RGR} = \frac{\ln(30) - \ln(10)}{10 - 0} \]

\[ \text{RGR} = \frac{3.401 - 2.302}{10} \]

\[ \text{RGR} = \frac{1.099}{10} = 0.11 \text{ units per day} \]

Therefore, the Relative Growth Rate (RGR) is 0.11 units per day.