Home Loan Interest Calculator
Calculate your monthly home loan payments, total interest, and total payment based on loan amount, interest rate, and loan term.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Home Loan Interest Calculator
This calculator estimates your monthly payment, total interest, and total payment for a fixed-rate home loan. Follow these steps:
- Enter Loan Amount – Input the total loan amount in dollars (e.g.,
200000for $200,000). - Enter Annual Interest Rate – Input the yearly interest rate as a percentage (e.g.,
5.5for 5.5%). - Enter Loan Term – Input the loan duration in years (e.g.,
30for 30 years). Must be a whole number. - Click "Calculate" – The results will appear below showing:
- Monthly Payment – Your fixed monthly installment.
- Total Interest – The total interest paid over the loan term.
- Total Payment – The sum of principal and interest.
Note: All inputs must be positive numbers. The calculator uses the standard amortization formula and assumes a fixed interest rate. If the rate is 0%, it simply divides the loan amount by the number of months.
Previous Results
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Frequently Asked Questions
The monthly payment is calculated using the standard amortization formula: M = P * r * (1+r)^n / ((1+r)^n - 1), where P is the loan amount, r is the monthly interest rate (annual rate divided by 12), and n is the number of monthly payments (loan term in years times 12).
If the interest rate is 0%, the monthly payment is simply the loan amount divided by the total number of payments. The calculator handles this edge case.
Yes, this calculator works for any fixed-rate amortizing loan, such as auto loans, personal loans, or student loans, as long as the interest rate is fixed and payments are made monthly.
