➗ Exponential Decay Calculator
Estimate decay from an initial amount, decay rate, and periods.
Result
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How this calculator works
Estimate decay from an initial amount, decay rate, and periods.
Formula
A=P(1-r)ᵗ
Example
100 decreasing 10% for 5 periods becomes about 59.05.
Frequently asked questions
What does the Exponential Decay Calculator do?
Estimate decay from an initial amount, decay rate, and periods.
Are the results exact?
The calculator follows the displayed formula. Rounded display values may differ slightly from full-precision results.
Can I use negative or decimal values?
Most fields accept decimals and negative values when they make sense for the formula.
How should I check an important result?
Review the formula, verify your entries, and confirm high-stakes work with a qualified teacher or professional.