Amortization Definition The free online Amortization Calculator is a quick way to calculate loan amortizations with ease. Simply enter in the loan interest rate (annual), length of the loan (in years), the loan down payment, and the total loan amount.

How to Calculate Amortization Let's be honest - sometimes the best amortization calculator is the one that is easy to use and doesn't require us to even know what the amortization formula is in the first place! But if you want to know the exact formula for calculating amortization then please check out the "Formula" box above.