Loan Calculator
Estimate monthly payments and total interest on a loan.
FinanceLast updated August 2026
Monthly payment$400.76
Total interest$4,045.54
Total paid$24,045.54
PrincipalInterest
Remaining balance over time
How to use it
- 1Enter the loan amount and choose your currency.
- 2Enter the annual interest rate and the loan term in years.
- 3Optionally add an extra monthly payment to see how much sooner you'd be debt-free.
- 4Read the monthly payment, total interest, principal-vs-interest breakdown, and the remaining-balance chart over time.
Example
A $20,000 loan at 7.5% over 5 years costs about $401/month — $24,048 total, of which $4,048 is interest.
How it works
This uses the standard fixed-rate amortization formula: M = P × [r(1+r)ⁿ] ÷ [(1+r)ⁿ − 1], where P is the loan amount, r is the monthly interest rate, and n is the number of monthly payments. Every payment is the same size, but early payments are mostly interest while later payments are mostly principal — the remaining-balance chart shows that shift over the life of the loan. Add an optional extra monthly payment to see how much sooner you'd be debt-free and how much interest it would save.
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