Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Financial
Loan Amortization Calculator
Calculate the periodic payment on an amortizing loan given the principal, annual interest rate, term in years, and payment frequency. Use it for any fully-amortizing fixed-rate loan — mortgage, auto, student, personal — where each payment is the same and the balance reaches zero at the end.
Debt
Debt-to-Income Ratio Calculator
Calculate your debt-to-income ratio — the percentage of your gross monthly income that goes to debt payments — exactly the way mortgage lenders compute it. Use it to gauge how lenders will view your application and to identify whether your debt load is comfortable, stretched, or risky.
Key differences
| Loan Amortization Calculator | Debt-to-Income Ratio Calculator | |
|---|---|---|
| Category | Financial | Debt |
| Inputs required | 4 | 5 |
| Result | Payment Amount ($) | Debt-to-Income Ratio (%) |
| What it does | Calculate the periodic payment on an amortizing loan given the principal, annual interest rate, term in years, and payment frequency. Use it for any fully-amortizing fixed-rate loan — mortgage, auto, student, personal — where each payment is the same and the balance reaches zero at the end. | Calculate your debt-to-income ratio — the percentage of your gross monthly income that goes to debt payments — exactly the way mortgage lenders compute it. Use it to gauge how lenders will view your application and to identify whether your debt load is comfortable, stretched, or risky. |