Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Financial
Effective Annual Rate (EAR) Calculator
Convert a stated nominal interest rate into the true annual rate once compounding is included. Use it to compare loans or savings accounts that compound at different frequencies.
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
| Effective Annual Rate (EAR) Calculator | Compound Interest Calculator | |
|---|---|---|
| Category | Financial | Economics |
| Inputs required | 2 | 3 |
| Result | Effective Annual Rate (%) | Final Amount ($) |
| What it does | Convert a stated nominal interest rate into the true annual rate once compounding is included. Use it to compare loans or savings accounts that compound at different frequencies. | 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. |