Online Index: Interest and APR Calculators
Overview of interest and APR calculator types: effective rate, APR, amortization, compound interest, and related tools.
Interest and APR calculator types
- Effective interest rate (EAR/APY): nominal rate and compounding periods → effective annual rate.
- APR calculator: loan amount, fees (optional), rate, term → approximate APR.
- Amortization schedule: loan amount, rate, term in months → payment, principal, interest, balance per period.
- Equal principal amortization: equal principal per period plus interest on remaining balance.
- Compound interest: principal, rate, time, compounding frequency → future value.
- Simple interest: principal, rate, time → interest and amount.
Frequently Asked Questions
- What interest/APR calculators are there?
- Effective interest rate (EAR/APY), APR from loan and fees, amortization schedules, compound interest, simple interest, and equal-principal amortization.
- What is the difference between APR and interest rate?
- Interest rate is the periodic cost of borrowing; APR includes fees and is annualized for comparison. APR is typically higher when fees exist.
- When use effective rate vs APR?
- Effective rate (APY) for investments/savings; APR for loans to compare total cost.
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