This solves for any 1 of the 4 items in the exponential growth equation or exponential decay equation, Initial Value (P), Ending Value (A), Rate (r), and Time (t).

This calculator has 4 inputs.

This calculator has 4 inputs.

- Pe
^{rt}= A - e is Eulers Constant = 2.718281828459

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- decay
- Reduction in size from decomposition
- exponential
- of or relating to an exponent
- exponential growth
- growth whose rate increase in proportion to the total number
- rate
- the ratio between two related quantities in different units. A measure, quantity, or frequency.
- time
- a point of time as measured in hours and minutes past midnight or noon