Simple interest calculator in your browser for free. Enter principal, rate, and time to get interest earned and total amount instantly. No signup or server upload required.
The Loan Calculator is a financial planning tool that helps borrowers understand the full cost of a loan before committing to it. By entering the loan principal, annual interest rate, and repayment term, you instantly see the monthly payment amount, total amount repaid over the life of the loan, and total interest paid. This information is essential for making informed borrowing decisions, whether you are taking out a personal loan, financing a car, or considering a small business loan. The calculator also provides a month-by-month amortization schedule showing how each payment is split between principal and interest, and how the outstanding balance decreases over time. Understanding this breakdown helps borrowers identify the true cost of credit and evaluate whether a shorter term with higher payments would save money overall. The tool runs entirely in your browser with complete privacy. Loan Calculator is commonly used as a mortgage calculator, making it a practical choice for everyday tasks directly in the browser. To extend the output further, Percentage Calculator can calculate percentage values and changes, Tip Calculator can calculate tip amounts and bill splits, and Discount Calculator can calculate discounted prices and savings.
The amortization schedule this calculator produces reveals an important truth about installment loans: in the early months, most of each payment goes toward interest rather than reducing the principal balance. This front-loading of interest means that paying off a loan early or making extra principal payments saves a disproportionately large amount of interest compared to the savings you might expect. For example, on a $20,000 car loan at 6% over 5 years, making one extra payment of $500 in month one reduces total interest paid by more than the same $500 extra payment made in month 48. Comparing loan offers from different lenders requires looking beyond the headline interest rate. A lower rate with higher fees may cost more than a slightly higher rate with no fees, and a longer term lowers monthly payments but increases total interest paid significantly. This tool makes all three variables (monthly payment, total interest, total cost) visible simultaneously so you can make a true comparison. For consumers, understanding APR (Annual Percentage Rate) versus nominal interest rate is important: APR includes fees and gives a more complete picture of the loan cost. This calculator works with nominal rates but can be adapted by using the APR figure for a more conservative comparison. Financial advisors recommend that monthly debt service (all loan payments combined) should not exceed 36% of gross monthly income, and this calculator helps assess whether a proposed loan fits within that guideline.