Loan Payment Calculator

Estimate a fixed monthly loan payment, total paid, and interest paid from principal, APR, and term.

Finance Updated 2026-05-11

Inputs

Principal ($) APR (%) Years

Monthly payment ($) Enter values to calculate.

Total paid ($) Enter values to calculate.

Interest paid ($) Enter values to calculate.

monthly payment = P x r / (1 - (1 + r)^-n), where r is monthly rate and n is number of months.

Estimate a fixed monthly loan payment, total paid, and interest paid from principal, APR, and term.

15000 at 7.5% for 5 years is about 300.57 per month.

Fees and insurance are not included unless you add them to principal.

APR, compounding, and payment timing can change lender disclosures.

What inputs does this calculator need?

Principal, APR, Years.

How should I round the result?

Keep extra digits while comparing values, then round for the final decision or report.

Can I reuse the result in another calculation?

Yes, but preserve the original inputs and units so the next calculation stays traceable.

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