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# Exponential Growth Calculator

Fill in any three to calculate the fourth value:
 Initial amount (P0): Growth rate (r): Time (t): Final amount (P(t)):
Result
 Initial amount (P0) 100 Growth rate (r) -.065 = -6.5% Time (t) 12 Final amount (P(t)) 45.8406011305

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The online Exponential Growth Calculator is used to solve exponential growth problems. It will calculate any one of the values from the other three in the exponential growth model equation.

## Exponential Growth Formula

The following is the exponential growth formula:

P(t) = P0ert

where:
P(t) = the amount of some quantity at time t
P0 = initial amount at time t = 0
r = the growth rate
t = time (number of periods)