Loan Calculator
Use our free online Loan Calculator to perform fast, accurate calculations with instant formulas, step-by-step arithmetic, and verified reference benchmarks.
Personal & Auto Loan Calculator
How to Calculate: The Loan Calculator Formula
Where P is the loan principal, r is the periodic interest rate (annual APR divided by number of compounding periods), and n is the total number of payments.
Step-by-Step Calculation Guide
- Enter the total principal amount you want to borrow.
- Specify the annual interest rate (APR) charged by the lender.
- Choose the loan term in either months or years.
- Review your exact monthly payment, total interest cost, and overall payback amount.
Practical Loan Calculator Examples
Borrowing $15,000 at 9.5% APR over 36 months.
Borrowing $25,000 at 8.0% APR over 60 months.
Impact of Loan Term on $20,000 Loan at 8% Interest
Official reference values and benchmark classifications based on standard institutional guidelines.
| Loan Term | Monthly Payment | Total Interest Cost | Total Amount Paid |
|---|---|---|---|
| 2 Years (24 Mo) | $904.54 | $1,709.05 | $21,709.05 |
| 3 Years (36 Mo) | $626.73 | $2,562.14 | $22,562.14 |
| 4 Years (48 Mo) | $488.26 | $3,436.39 | $23,436.39 |
| 5 Years (60 Mo) | $405.53 | $4,331.67 | $24,331.67 |
Frequently Asked Questions about Loan Calculator
What is the difference between APR and interest rate?
The nominal interest rate is the base cost of borrowing the principal. APR (Annual Percentage Rate) includes the interest rate PLUS mandatory lender fees, origination charges, and points.
How do extra payments lower total loan interest?
Extra payments apply directly toward the principal balance. Because subsequent interest is calculated on a smaller balance, your loan is paid off months or years earlier.
Are there penalties for paying off loans early?
Some commercial or personal lenders charge a prepayment penalty. Always check your loan agreement for prepayment clauses before making accelerated payments.
What is an amortization schedule?
An amortization schedule is a complete chronological table showing each monthly payment split into principal reduction and interest fee.