Thunder Tools

Loan Calculator

Enter your loan amount, annual interest rate, and loan term to calculate your fixed monthly payment using the standard amortization formula. See the total amount you'll repay and how much of that is interest, for a fully amortizing loan with equal monthly payments.

Monthly payment 377.42
Total amount paid 22,645.48
Total interest paid 2,645.48
Loan amount
Annual interest rate (%)
Loan term (years)

How it works

This calculator uses the standard amortization formula for a fixed-rate loan with equal monthly payments. Your payment stays the same for the whole term, but early payments go mostly toward interest, while later payments pay down more of the principal.

Tip

A shorter loan term means higher monthly payments but far less interest paid overall — try adjusting the term to see how much interest you could save.

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