Amortization Calculator
Break down monthly payments into principal and interest over time.
Enter Your Numbers
PMT = P * [i(1+i)^n] / [(1+i)^n - 1]
Amortization Calculator Guide
Use this amortization calculator to quickly work out break down monthly payments into principal and interest over time. Enter your numbers above and get instant results along with a year-by-year breakdown so you can see exactly how the numbers change over time.
The formula used is PMT = P * [i(1+i)^n] / [(1+i)^n - 1]. Run a few different scenarios by changing one input at a time to see how each variable affects the outcome.
How to Use This Amortization
Enter your values in the form above and click Calculate. The results section shows the most important numbers first. Below that, the year-by-year table lets you see how the balance changes over the full term. Change one field at a time to compare different scenarios side by side.
When to Use a Amortization
This calculator is useful when you need to estimate break down monthly payments into principal and interest over time. It works for both quick estimates and detailed planning. For best results, use realistic numbers based on your actual financial situation rather than optimistic guesses. Check the results table to understand the long-term trajectory, not just the final number.