Skip to content
Home » Doubling Time Calculator

Doubling Time Calculator

Doubling Time Calculator | Free Online Tool

Calculate Doubling Time

Result:

The Doubling Time Formula

The doubling time can be calculated using the Rule of 70, which provides a good approximation:

Doubling Time = 70 / Growth Rate (%)

For more precise calculations, we use the natural logarithm:

Td = ln(2) / ln(1 + r)

Where:

  • Td = Doubling Time
  • r = Growth Rate (as a decimal)
  • ln = Natural logarithm