Exponential Growth Calculator
Apply a constant percentage change per period.
Formula
N(t) = N₀(1 + r/100)^t.
Final amount ≈ (100)×(1+(10)÷100)^(5) · Net change ≈ (161.051)-(100)
How to use
- Enter the initial amount.
- Enter the change per period and number of periods.
- Read the final amount and net change.
Examples
- 100 growing 10% for 2 periods becomes 121.
Frequently asked questions
How do I model decay?
Enter a negative rate, such as −10 for a 10% decrease per period.
Is the rate continuous?
No. It is the effective percentage change per period, not a continuous rate constant.
Can periods be fractional?
Yes. Fractional periods interpolate the exponential model; no future outcome is guaranteed.
Sources
Updated: