Loan Interest Calculator
Calculate how much total interest you'll pay over the life of a loan. Compare interest costs across different loan terms.
Enter loan details.
How Loan Interest Works
With amortized loans, you pay more interest in early months and more principal in later months. Longer terms mean lower monthly payments but significantly more total interest.
Example: $30,000 at 7% for 5 years.
Monthly payment: $594.04 | Total interest: $5,642
Monthly payment: $594.04 | Total interest: $5,642
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Last updated: 2026-08-08