Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Compound Interest Calculator
Project how an investment grows over time when interest is reinvested each compounding period β the engine behind retirement accounts, high-yield savings, dividend reinvestment, and most long-term wealth building. Enter your starting principal, an annual interest rate, a time horizon in years, and how many times per year interest compounds (1 = annually, 4 = quarterly, 12 = monthly, 365 = daily), and the calculator returns the future value. Compound interest is often called the "eighth wonder of the world" precisely because the growth curve is exponential, not linear, and small differences in rate or time horizon produce wildly different end results.
Loan Amortization Calculator
Calculate your periodic payment amount and see a full principal-and-interest breakdown for any loan. Use it when comparing mortgage offers, auto loans, or any installment debt before you sign.
Key differences
| Compound Interest Calculator | Loan Amortization Calculator | |
|---|---|---|
| Category | Financial | Accounting |
| Inputs required | 4 | 4 |
| Result | Future Value ($) | Payment Amount ($) |
| What it does | Project how an investment grows over time when interest is reinvested each compounding period β the engine behind retirement accounts, high-yield savings, dividend reinvestment, and most long-term wealth building. Enter your starting principal, an annual interest rate, a time horizon in years, and how many times per year interest compounds (1 = annually, 4 = quarterly, 12 = monthly, 365 = daily), and the calculator returns the future value. Compound interest is often called the "eighth wonder of the world" precisely because the growth curve is exponential, not linear, and small differences in rate or time horizon produce wildly different end results. | Calculate your periodic payment amount and see a full principal-and-interest breakdown for any loan. Use it when comparing mortgage offers, auto loans, or any installment debt before you sign. |