LoanMath

Loan Interest Calculator

Total interest on any loan.

Your figures stay on your computer — no server, no tracking, no registration
$
%
yr

Try: Loan amount=20000, APR=6.5, Term=5 → $20,000, $391, $23,479, $3,479

How to use

Returns the lifetime interest cost for any amortizing loan — the price of borrowing above the principal.

Formula

Total interest = PMT × months − principal.

FAQ

Cheaper to borrow short?

Almost always — a shorter term means less time for interest to compound.

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