How do I use the Loan/Mortgage Calculator?

Enter the principal amount, annual interest rate, and loan term using years and extra months. Try a preset for common mortgage or auto-loan scenarios if you want a fast starting point. Review the monthly payment, total interest, and total cost cards after each update. Use the pie chart to compare how much of the full repayment goes to principal versus interest. Check the first 12 months of the amortization schedule to see how each payment is split over time.

Is the Loan/Mortgage Calculator free?

Yes, the Loan/Mortgage Calculator is completely free. It runs entirely in your browser with no signup, no download, and no data sent to any server.

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Loan/Mortgage Calculator

Estimate monthly loan payments, total interest, amortization, and a principal-versus-interest breakdown.

loan calculatormortgage calculatoramortization schedulemonthly paymentinterest calculator

Principal amount Annual interest rate

Term years Extra months

Adjust the loan details to estimate monthly payments and review the first year of amortization.

Monthly payment

$0.00

Total interest

$0.00

Total cost

$0.00

Principal0%

Interest0%

First year summary

Enter a valid loan amount and term to generate a summary.

0 months

Amortization schedule

First 12 months

Month	Payment	Principal	Interest	Balance

How to use

Estimate loan payments and review the first year of amortization

1 Enter the principal amount, annual interest rate, and loan term using years and extra months.
2 Try a preset for common mortgage or auto-loan scenarios if you want a fast starting point.
3 Review the monthly payment, total interest, and total cost cards after each update.
4 Use the pie chart to compare how much of the full repayment goes to principal versus interest.
5 Check the first 12 months of the amortization schedule to see how each payment is split over time.

A loan or mortgage calculator makes it easier to understand the long-term cost of borrowing before you commit to a payment plan. This tool focuses on the details most people want quickly: estimated monthly payment, total interest paid over the term, total repayment cost, and a year-one amortization snapshot. That combination helps you compare different rates or terms without building formulas manually in a spreadsheet.

The visual principal-versus-interest breakdown is useful because many borrowers underestimate how much interest adds up over long terms, especially with mortgages. The first-year amortization table also shows why early payments are usually more interest-heavy than later ones. By adjusting principal, rate, or term length, you can immediately see how the monthly payment and total borrowing cost change together.

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