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.
Economics
Compound Interest Calculator
Project the future value of a lump-sum investment when interest is reinvested each year using A = P · (1 + r)ᵗ. The simplest compounding model — assumes annual compounding, a constant rate, and no additional contributions or withdrawals.
Key differences
| Loan Amortization Calculator | Compound Interest Calculator | |
|---|---|---|
| Category | Financial | Economics |
| Inputs required | 4 | 3 |
| Result | Payment Amount ($) | Final Amount ($) |
| 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. | Project the future value of a lump-sum investment when interest is reinvested each year using A = P · (1 + r)ᵗ. The simplest compounding model — assumes annual compounding, a constant rate, and no additional contributions or withdrawals. |