Enter principal, annual rate, term, and frequency settings. Compare simple vs compound results, then inspect total cost and breakdown charts.
Formula
Loan payment uses an annuity-style model with configurable compounding and payment frequency; simple-interest mode is included for side-by-side education.
Loan compound interest guide (simple vs compound)
Use this calculator to compare simple and compound borrowing cost, understand payment structure, and visualize how interest accumulates across the loan timeline.
Why this loan calculator is different
Beyond standard monthly payment math, this version supports flexible compounding and payment frequencies, extra principal inputs, and a direct simple-versus-compound comparison. That makes the true cost of borrowing easier to explain and easier to act on.
Inputs that most affect cost
Rate + term length: strongest drivers of total interest.