The Exponential Decay Calculator is a useful tool to determine how a quantity decreases over time based on a given decay rate and time period. It supports both continuous decay using the formula A=P⋅e−rtA = P \cdot e^{-rt}A=P⋅e−rt and compound decay with A=P⋅(1−rn)ntA = P \cdot (1 – \frac{r}{n})^{nt}A=P⋅(1−nr​)nt. By entering the initial value, decay rate, time, and the number of compounding periods, users can quickly calculate the remaining amount after decay. This calculator is especially helpful in fields such as physics, chemistry, biology, and finance, where processes like radioactive decay, depreciation, and population decline follow exponential patterns.