Loan Calculator Free Online
Calculate the monthly payment on any fixed-rate installment loan — auto, student, personal, business. Same amortization math as a mortgage, generic loan terms.
Results
Pro — bulk batch calculation, API access, history & favorites
API access · Priority queue · Team workspace
Related Tools
Loan Calculator Features
Any Installment Loan
Auto loans (3-7 years), student loans (5-25 years), personal loans (1-7 years), business loans. Same fixed-rate amortization for all.
Standard PMT Formula
Industry-standard amortization. PMT = P × r / (1 − (1+r)^−n) gives equal monthly payments.
Term in Months
Specify term in months (3, 12, 36, 48, 60, 72, 84, 120…) for precise control. Useful for auto/personal loans typically expressed in months.
Live Calculation
Change any input, see all results instantly.
Total Cost View
Total payments + total interest cost over the life of the loan, helping you compare offers across different terms and rates.
100% Private
All math runs in your browser.
Free vs Pro
| Feature | Free | Pro |
|---|---|---|
| Full loan calculation | ||
| Live calculation | ||
| Quick presets | ||
| Bulk CSV / Excel calculation | — | |
| REST API access | — | |
| Save & share calculations | — |
Frequently Asked Questions
Any fixed-rate installment loan: auto, student, personal, small business, RV, motorcycle. Not credit cards (variable balance) or interest-only loans.
PMT = P × (r ÷ 12) ÷ [1 − (1 + r ÷ 12)^−n] where P = principal, r = annual rate, n = months. Example: $25k @ 8.5%/60mo = $513/mo.
60 or 72 months in the US. 84-month loans exist but mean more interest and risk being upside-down (owing more than the car is worth).
Yes if your APR is high (>6%) and you have no higher-interest debt. Each extra dollar of principal saves the interest that would have accrued on it. Check for prepayment penalties.
Set the rate to 0%. Monthly payment becomes P / n with $0 interest. Common in promotional auto loans, but verify the actual APR vs cash discount you would forgo.