Banking & Interest

Simple and compound interest, APY/APR, savings goals, CDs, and inflation.

Calculate a loan’s true APR by factoring in upfront fees on top of the stated interest rate.

Convert a nominal interest rate into its Annual Percentage Yield (APY) based on compounding frequency.

Calculate the maturity value of a Certificate of Deposit (CD).

Calculate the true effective annual rate of a loan once compounding frequency is factored in.

Calculate how inflation erodes purchasing power over time — or how much you’ll need to keep up with it.

Solve for the interest rate implied by a loan’s principal, payment, and term.

Project your savings account balance from an initial deposit and recurring monthly deposits.

Calculate the monthly contribution needed to reach a savings target by a given date.

Calculate simple (non-compounding) interest on a principal amount.