Loan Calculator
Sketch installment payments from principal, annual rate, and term so you can compare scenarios before talking to a lender.
Borrowing decisions hinge on how principal, interest rate, and term interact. This loan calculator estimates a recurring payment and related interest totals so you can see why a longer term lowers the monthly amount while raising total interest paid.
Real loans add fees, insurance, variable rates, prepayment penalties, and underwriting rules this page cannot see. Use the numbers as a conversation starter with a bank or advisor—not as a binding quote or personalized financial advice.
Simple percentage discounts belong on the percentage calculator. Currency conversion for foreign principal belongs on the currency converter before you model payments.
How to use
- Enter the principal — Type the amount you expect to borrow, excluding fees you will pay in cash at closing if you model those separately.
- Enter the annual interest rate — Use the nominal APR-style rate your lender quotes. Confirm whether it is compounded monthly in their disclosure.
- Set the term — Choose years or months to match how the product is sold (for example, 36 months or 5 years).
- Review payment and interest — Read the estimated installment and total interest. Compare a second scenario with a different term or rate.
- Stress-test assumptions — Raise the rate slightly or shorten the term to see how sensitive the payment is before you apply.
- Talk to a professional — Bring your scenarios to a lender or licensed advisor for offers that include fees and legal terms.
Use cases
- Car and personal loans — Compare payment comfort across term lengths before visiting a dealership desk.
- Mortgage ballparks — Get a rough monthly figure to pair with housing budgets—then request formal estimates.
- Debt scenario planning — See how extra principal (modeled as a smaller balance) would change payments.
Tips
- Disclaimer: estimates only—not credit approval, a lender quote, or financial advice.
- APR and “interest rate” are not always identical; read the disclosure definitions.
- Fees financed into principal change both payment and total cost—model them explicitly.
- Lower monthly payments can still mean higher lifetime interest; compare both metrics.
FAQ
No. It is an educational estimate. Only a lender can issue terms after underwriting.
A standard fixed installment model with interest applied over the term. Exotic products may differ.
No. Enter numeric inputs only—principal, rate, and term—as typed values.
Treat each rate scenario separately. True variable schedules need lender-specific tools.
Not included unless you manually add them to the payment after the fact.
Percentage and currency converters help with related money math on Piano Garden.