A personal loan calculator uses the APR, borrowing amount and loan term to estimate your monthly repayments and total amount payable. APR usually reflects the interest rate plus any compulsory fees, giving you a more useful way to compare loans than looking at the headline rate alone. The result is only an estimate: a representative APR may not be the rate you are offered, as the lender will assess your circumstances, credit history and affordability. Check the lender’s pre-contract information before applying, and use an FCA-authorised provider.