Loan Calculator
A loan is a formal agreement between a borrower and a lender in which the borrower receives a principal amount and is obligated to repay it typically with interest over an agreed period of time.
| Payment Every Month | $1,110.21 |
| Total of 120 Payments | $133,224.60 |
| Total Interest | $33,224.60 |
| Period | Payment | Principal | Interest | Balance |
|---|
| Amount Due at Loan Maturity | $179,084.77 |
| Total Interest | $79,084.77 |
| Year | Accrued Interest | Balance |
|---|
| Present Value (Amount Needed Now) | $55,839.48 |
| Total Interest | $44,160.52 |
| Face Value (Amount at Maturity) | $100,000.00 |
| Year | Accrued Interest | Value |
|---|
Amortized Loan: Fixed Regular Payments Over time
The amortized loan calculator is designed for the most common loan types including mortgages, auto loans, student loans and personal loans. With this loan structure borrowers make fixed regular payments over the life of the loan until the entire principal and interest balance is paid off at maturity.
Deferred Payment Loan: Pay the Full Amount in One Lump Sum at Maturity
Mostly commercial and short-term loans fall under this category. Unlike amortized loans deferred payment loans do not require periodic payments. Instead the borrower repays the entire principal and accumulated interest in one lump sum when the loan reaches maturity.
Bond: Fixed Payment Due at Maturity
This calculator shows you what a future payment (like a loan or bond) is worth today. It helps investors and borrowers understand the real value of money over time.
Explore Our Other Loan Calculators
Need something more specific? We have built separate tools for every type of loan so you get the most accurate results for your situation.
Personal Loan
Track payments and see exactly how extra payments can save you money on interest.
Amortization Loan
View a detailed monthly and yearly breakdown of every payment you make.
Payoff Loan
Find out how biweekly or extra payments cut your loan term and total interest paid.
Loan Calculator – Calculate Your Monthly Payments Easily
Borrowing money is a big decision. Whether you are buying a car, a home, or covering personal expenses, knowing your monthly payment before you sign anything is very important. A loan calculator helps you figure out that in seconds no math degree is needed.
What is a loan calculator?
A loan calculator is a simple digital tool that helps you figure out how much you will pay every month on a loan. Whether you are buying a home, a car, or covering a personal expense, this tool does all the math for you in seconds. You just enter a few basic details: loan amount, interest rate, and repayment period and it shows your monthly payment instantly.
It removes the guesswork from borrowing. Instead of being surprised by your monthly bill, you can plan ahead with real numbers.
How the Loan Calculator Works
This tool uses a standard financial formula to calculate your monthly payment. You enter three things: the total loan amount you want to borrow, the annual interest rate your lender offers, and the loan term (how many months or years you will take to repay it).
Once you enter those numbers, the tool instantly computes your fixed monthly payment. It also shows you the total amount you will repay over the life of the loan and the total interest you will pay so you always know the full cost of borrowing.
MONTHLY PAYMENT FORMULA
M = P × [r(1+r)ⁿ] / [(1+r)ⁿ − 1]
- M = Monthly payment
- P = Principal loan amount
- r = Monthly interest rate (annual rate ÷ 12)
- n = Total number of payments (months)
Loan Payment Calculator Formula and Explained
The formula behind every loan payment tool is called the amortization formula. It calculates equal monthly payments so that by your final payment, you have paid off the full principal plus all interest.
Here is a practical breakdown. If the monthly interest rate r = 0 (interest-free loan), the formula simplifies to: M = P ÷ n. But for most real loans with interest, the standard formula applies.
SIMPLE INTEREST (for reference)
Interest = Principal × Rate × Time
In early months, a larger portion of your payment covers interest. Over time an increasing share is allocated to the principal. This is why the amortization schedule (covered below) is so useful it shows you exactly how each dollar is split.
Types of Loan Calculators
Different loans come with different terms, rates, and costs. The following are the three most commonly used types:
Auto Loan Calculator
An auto loan calculator helps you estimate what you will pay each month when financing a vehicle. You enter the car price, your down payment, the loan term (usually 24–72 months), and the interest rate. The tool then shows your monthly installment and total repayment cost. It is especially helpful when comparing dealer financing vs. bank financing.
Car Loan Calculator
Very similar to the auto loan tool, a car loan calculator focuses specifically on new or used vehicle purchases. It may also factor in trade-in value and sales tax, giving you a more realistic picture of your actual financing amount. This is one of the most-used tools in the US because most Americans finance their vehicles.
Home Loan Calculator
A home loan calculator often called a mortgage calculator factors in your home price, down payment, loan term (typically 15 or 30 years), and interest rate. Some advanced versions also add property taxes, homeowner’s insurance, and PMI to give you a full monthly cost estimate. This device is critical for any homebuyer to understand affordability before applying.
How to Use This Loan Calculator
- Loan amount. How much would you like to borrow?
- Add the annual interest rate Check your lender’s offer or use current average rates.
- Choose your loan term. How many months or years will you take to repay?
- Click Calculate Your monthly payment appears instantly.
- Review the breakdown See total repayment and total interest paid.
Tip: Try different combinations. Shorter terms have higher monthly payments but much lower total interest. A longer term lowers monthly bills but costs more overall.
Benefits of Using a Loan Payment Calculator
- Saves time no manual math needed
- Helps you budget before you borrow
- Lets you compare multiple loan offers side by side
- Shows total interest cost so you know the real price of borrowing
- Works for any type of loan mortgage, auto, personal, and more
- Helps you decide between shorter and longer repayment terms
Example Calculation (Monthly Payment Breakdown)
Let’s say you borrow $20,000 at a 6% annual interest rate for 5 years (60 months). Here is how the numbers look:
Detail | Value |
Loan Amount | $20,000 |
Annual Interest Rate | 6% |
Loan Term | 60 months |
Monthly Payment | $386.66 |
Total Amount Paid | $23,199.60 |
Total Interest Paid | $3,199.60 |
APPLIED FORMULA
r = 6% ÷ 12 = 0.005 | n = 60 M = 20000 × [0.005(1.005)⁶⁰] / [(1.005) ⁶⁰ − 1] ≈ $386.66/month
Amortization Schedule Explained
An amortization schedule is a full table of every payment you will make from month one to your final payment. Each row shows the payment number, the amount going to interest, the amount reducing your principal, and your remaining balance.
In the early months of a loan, most of your payment covers interest. By the end, almost all of it goes to principal. This is called front-loaded interest and it is exactly why paying a little extra each month early on can save you a significant amount of money over the life of the loan.
Our amortization tool lets you view this full schedule, download it, and even model what happens when you make extra payments.
Tips to Reduce Your Loan Interest
- Make one extra payment per year it can cut years off a 30-year mortgage
- Switch to biweekly payments instead of monthly you end up making one extra payment annually without noticing
- Pay more than the minimum whenever possible every extra dollar reduces your principal faster
- Refinance when rates drop even a 1% reduction can save thousands over the loan term
- Choose a shorter loan term if monthly cash flow allows a 15-year home loan costs far less in interest than a 30-year one
- Improve your credit score before applying a better score typically means a lower rate
FAQs
How to calculate interest on a loan?
For simple interest: Interest = Principal × Rate × Time. For most installment loans, interest is calculated monthly on the remaining balance using the amortization formula. Our tool handles this automatically.
How much loan can I qualify for?
Lenders typically look at your income, credit score, existing debts, and debt-to-income (DTI) ratio. A common rule is that your total monthly debt payments should not exceed 43% of your gross monthly income. Use our tool to back-calculate a comfortable loan amount based on a payment you can afford.
How to calculate a mortgage loan payment?
Use the standard formula: M = P × [r(1+r)ⁿ] / [(1+r)ⁿ − 1]. Enter your home loan amount, interest rate, and term (commonly 180 or 360 months) into our home loan calculator for an instant answer.
How to calculate car loan interest?
Car loan interest is calculated the same way as any installment loan. Enter your vehicle price (minus down payment), your APR, and the loan term into our auto loan calculator. It will show your monthly payment and total interest paid.
What is the method for calculating a loan’s interest rate?
If you know your monthly payment, principal, and term, you can solve for r in the amortization formula though this requires a financial solver. The easier approach: enter your loan terms into our tool and adjust the rate field until the payment matches your lender’s quote.