personal-loans

How to use the loan calculator

Treat the result as a sketch. The rate you type is an assumption until a lender writes it down.

Maya Chen
Editor, consumer credit
Reviewed August 25, 20261 min read

The loan calculator turns an amount, a yearly rate and a term into a monthly payment and a total-interest figure. It is a sketch for United States, not a credit check and not a lender quote.

The usual mistakes

  • Typing an advertised headline rate instead of APR from a written offer.
  • Picking a term so long that the monthly figure looks fine and the interest does not.
  • Forgetting set-up fees that sit outside the simple interest maths.

When you have a plausible monthly number, compare it with personal-loan offers or match on the same amount and term. For mortgages use the mortgage calculator; for a car, the car-finance calculator.

More context: APR versus the nominal rate and how Bankmatch compares loans.

Written for readers in United States. Bankmatch is paid by providers and never by readers; that does not change what we write.