Interest Rate Calculators

Calculate the true Annual Percentage Rate (APR) of your loan including all fees. See monthly payments, total interest, cost breakdown, and amortization schedule with interactive visualization.

Convert APR to APY with interactive compounding frequency comparisons, step-by-step calculations, and growth projections. Understand the true impact of compound interest on your savings and investments.

Enter a nominal interest rate and how often it compounds to get APY and, optionally, growth of a starting deposit.

Convert APY (Annual Percentage Yield) to APR (Annual Percentage Rate) with visual comparison, step-by-step calculation breakdown, and comprehensive analysis of how compounding frequency affects your actual interest rate.

Calculate the effective annual interest rate (EAR/APY) from a nominal rate and see how different compounding frequencies affect your returns or costs.

Compute implied forward rates from a spot rate term structure. Paste any yield curve to get the full forward rate matrix, the 1-period forward curve over the spot curve, a curve-shape diagnosis and a no-arbitrage walkthrough.

Calculate the actual annual interest rate (APR) of a loan from the loan amount, term, and monthly payment. Includes step-by-step formula breakdown, full amortization schedule, and interactive payment visualization chart.

Enter an effective annual rate (up to 1,000%) and compounding frequency to calculate the nominal annual interest rate (APR) with step-by-step formulas.