UltimateTools
Money & Finance

How to Use the Personal Loan Calculator

Enter the loan amount, interest rate, and term in months or years — the calculator instantly shows the fixed monthly payment and total interest paid over the full term, using the standard amortization formula.

The Personal Loan Calculator uses the standard fixed-payment amortization formula — here's what to enter for an accurate result.

Entering loan details

Enter the actual loan amount (not the amount you'd receive after any origination fee, unless comparing net proceeds specifically), the interest rate, and the term — the calculator returns the monthly payment and total interest for those exact terms.

Comparing multiple offers

Running the calculator once per offer, using each one's actual rate and any fee-adjusted amount, makes it straightforward to compare total interest and total cost across multiple loan offers side by side.

Frequently asked questions

Should I enter the rate as APR or the stated interest rate?

For the most accurate cost comparison, use APR if available, since it accounts for fees the stated interest rate alone doesn't — check the loan's disclosure documents for the specific APR figure.

Can I see how extra payments would shorten the loan?

For that specific analysis, the Debt Payoff Calculator's simulation is built to model extra payments and their effect on total interest and payoff timeline.