📌 Interest Rate Calculator
Simple interest rate from P, A, t
How to Use This Calculator
1
Enter P, A, t
Principal, final amount, and time in years.
2
Calculate Rate
Returns simple interest rate r.
Formula
A = P(1 + r·t) ⇒ r = (A/P − 1)/t
Frequently Asked Questions
Is this compound rate?
No, this version is simple interest. Use other calculators for compound rates.
Units?
Years for t; convert months to years.