Interest and APR Calculators
Calculate simple and compound interest with online interest and APR calculators. See how varying number of periods and compounding frequency affects nominal interest rate, effective interest rate, periodic and equivalent interest rate calculations.
Simple Interest Plus Principal Calculator
A = P(1 + rt) (Principal + Interest)
I = Prt (Interest Only)
A = P(1 + r)t and A = P(1 + r/n)nt and A = Pert
Periodic Compound Interest Calculator
Excel Function Method for A = P(1 + r)t
APR: Annual Percentage Rate Calculator
APR: Annual Percentage Rate Calculator, Basic
Effective Annual Rate (EAR) Calculator
Effective Interest Rate Calculator
Nominal Interest Rate Calculator
Periodic Interest Rate Calculator