Can I solve for the rate instead?
This tool focuses on forward projection. Rearranging the equation manually lets you solve for rate or time when required.
Step-by-step walkthrough
Use this companion guide beside the interactive calculator to make sure you understand the “why” behind every click. Each section includes the classroom explanation, student-friendly language, and quick practice prompts.
Collect the data points listed below and double-check their units. Keeping an organized “givens” list is one of the fastest ways to reduce math errors and impress exam graders.
Step 1
Enter an initial amount.
Step 2
Set the growth/decay rate per period and the number of periods to apply.
Step 3
Review the future value along with total change and a midpoint snapshot.
This tool focuses on forward projection. Rearranging the equation manually lets you solve for rate or time when required.
Toggle continuous mode to use FV = Initial × e^(rate × time) for natural exponential processes.