Estimate your monthly payments and total interest cost
Typical range: 6% - 36%
One-time fee deducted from loan amount
Monthly Payment
$0.00
Effective APR: 0%
Total Interest
$0.00
Total Cost
$0.00
Total Payments
$0.00
Fee Amount
$0.00
A personal loan calculator is a financial tool that helps you estimate your monthly loan payments and total interest cost before applying for a personal loan. It takes into account the loan amount, interest rate, loan term, and any origination fees to give you a clear picture of your financial obligation.
Personal loans are unsecured loans that can be used for nearly any purpose—debt consolidation, home improvements, medical expenses, weddings, or major purchases. Understanding your monthly payment before applying helps you budget appropriately and compare different loan offers.
The calculator also reveals the true cost of borrowing by showing total interest and fees over the loan term. Many borrowers focus only on the monthly payment and overlook the total interest they'll pay. A good calculator makes this information transparent.
Calculating personal loan payments involves using the amortization formula. Here's the process:
Monthly Payment = P × [r(1+r)^n] ÷ [(1+r)^n − 1]
Total Interest = (Monthly Payment × n) − P
Fee Amount = Loan Amount × Origination Fee %
Total Cost = Loan Amount + Total Interest + Fees
Effective APR = Includes interest rate + fees over loan term
$15,000 personal loan at 10% for 3 years:
| Loan Amount | $15,000.00 |
| Interest Rate | 10% |
| Term | 3 years (36 months) |
| Monthly Payment | $483.98 |
| Total Interest | $2,423.28 |
| Origination Fee (1%) | $150.00 |
| Total Cost | $17,573.28 |
The interest rate and APR are often confused but serve different purposes. The interest rate is the basic cost of borrowing, expressed as a percentage of the loan amount. APR (Annual Percentage Rate) includes the interest rate plus all fees and charges, providing a more complete picture of the loan's true cost.
For example, a personal loan with a 10% interest rate and a 5% origination fee has an effective APR of about 13.5%. The APR is higher because it spreads the upfront fee over the loan term. When comparing loans, always compare APRs, not just interest rates.
Federal law requires lenders to disclose APR, making it easier for borrowers to compare different offers. A loan with a lower interest rate but high fees may actually be more expensive than a loan with a higher rate but no fees.
Loan term is the length of time you have to repay the loan. Personal loan terms typically range from 12 to 84 months. The term significantly affects both your monthly payment and total interest cost.
Shorter terms mean higher monthly payments but less total interest. A $15,000 loan at 10% over 3 years costs $483.98/month with $2,423 total interest. The same loan over 5 years costs $318.71/month but $4,122 total interest—almost double the interest.
Choose the shortest term you can afford. While longer terms provide lower payments, they cost significantly more in interest. If possible, select a term that balances payment affordability with total interest cost.
Your monthly payment is the amount you must pay each month to repay the loan within the specified term. It includes both principal and interest. The payment is calculated to ensure the loan is fully paid off by the end of the term.
Factors affecting your monthly payment include: loan amount (higher = higher payment), interest rate (higher = higher payment), and loan term (longer = lower payment). Understanding these relationships helps you choose the right loan structure.
Before applying for a personal loan, calculate your monthly payment and ensure it fits within your budget. Financial advisors recommend keeping total debt payments below 36% of your gross monthly income.
Total interest cost is the cumulative interest you'll pay over the entire loan term. This is the "cost" of borrowing money. Understanding total interest helps you compare different loan offers and decide whether borrowing is the right financial decision.
The total interest depends on three factors: loan amount, interest rate, and loan term. Higher loan amounts, higher rates, and longer terms all increase total interest. Even a small difference in interest rate can add hundreds or thousands of dollars over the loan term.
Here's how interest rate affects a $20,000 loan over 5 years: