How to use the personal loan calculator
- Loan amount, the total dollars you plan to borrow.
- APR, the annual percentage rate your lender quotes, as a percent (for example, enter 10 for 10%).
- Term, how long you will repay over. Type the number, then choose Months or Years from the unit selector.
The results update instantly as you type. You will see your fixed monthly payment, the total interest you will pay over the life of the loan, and the total amount paid. Below that, an amortization table shows the first 12 months of payments, with a button to expand the full schedule.
How personal loan payments work
A personal loan is usually a fixed-rate, fully amortizing loan. That means you make the same payment every month, and by the end of the term the balance reaches exactly zero. Each payment is split between interest (the lender's charge on the remaining balance) and principal (the part that actually reduces what you owe). Early in the loan, most of each payment goes to interest because the balance is large. As the balance falls, more of every payment goes to principal, so the loan pays down faster toward the end.
The monthly payment comes from the standard amortization formula. If P is the loan amount, r is the monthly interest rate (APR divided by 12, then by 100), and n is the number of months, the payment is P · r · (1 + r)n / ((1 + r)n − 1). For example, a $10,000 loan at 10% APR over 36 months works out to a monthly payment of about $322.67, around $1,616 in total interest, and roughly $11,616 paid overall.
Tips to pay less interest
- Choose a shorter term: a higher monthly payment but far less total interest.
- Shop for a lower APR: even a one or two point reduction adds up over the full term.
- Make extra payments: any amount above the scheduled payment goes straight to principal and shortens the loan.
- Watch for fees: origination fees and prepayment penalties are not part of the basic amortization math, so check your loan agreement.
Frequently asked questions
Does this work for debt consolidation loans?
Yes. Any fixed-rate amortizing personal loan works, enter the amount, APR and term, and read off the monthly payment and total interest.
Why is my lender's payment slightly different?
Lenders may include origination fees, round differently, or use a different day-count method. This tool gives a clean estimate from amount, APR and term.
Can I enter 0% APR?
Yes. With a 0% APR the payment is simply the loan amount divided by the number of months, and total interest is zero.
How is my personal loan payment calculated?
It uses the standard amortization formula based on the loan amount, the monthly interest rate (your APR divided by 12), and the total number of monthly payments. The payment stays the same each month while the split between principal and interest shifts over time.
What is APR on a personal loan?
APR is the annual percentage rate your lender charges. This calculator treats the APR as the nominal annual rate and divides it by 12 to get the monthly rate used in the amortization schedule.
Can I enter the term in years instead of months?
Yes. Enter the term number and pick Months or Years from the unit selector. Years are converted to months automatically for the calculation.
This tool is for general information only and is not financial advice.
Related: Loan & Mortgage Calculator, Simple Interest Calculator, Compound Interest Calculator.