Money Guys Mortgage Calculator
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Reviewed by Calculator Editorial Team
Use this mortgage calculator to determine your monthly payments, total interest, and loan amortization schedule. Enter your loan amount, interest rate, and loan term to get an accurate estimate of your mortgage payments.
How to Use This Calculator
To use the mortgage calculator:
- Enter the loan amount in dollars.
- Enter the annual interest rate as a percentage.
- Select the loan term in years.
- Click "Calculate" to see your monthly payment and other details.
- Use the "Reset" button to clear all fields.
The calculator will display your estimated monthly payment, total interest paid over the life of the loan, and a breakdown of your loan amortization schedule.
Formula Used
The mortgage payment is calculated using the standard mortgage formula:
M = P [ i(1 + i)^n ] / [ (1 + i)^n - 1 ]
Where:
- M = Monthly payment
- P = Principal loan amount
- i = Monthly interest rate (annual rate divided by 12)
- n = Number of payments (loan term in years multiplied by 12)
This formula calculates the fixed monthly payment required to fully amortize a loan over the specified term.
Worked Example
Let's calculate a mortgage payment for a $200,000 loan at 4.5% annual interest for 30 years.
- Principal (P) = $200,000
- Annual interest rate = 4.5% or 0.045
- Monthly interest rate (i) = 0.045 / 12 = 0.00375
- Number of payments (n) = 30 years × 12 = 360
Plugging these values into the formula:
M = 200,000 [ 0.00375(1 + 0.00375)^360 ] / [ (1 + 0.00375)^360 - 1 ]
M ≈ $1,073.64
So, the monthly payment would be approximately $1,073.64.
Frequently Asked Questions
What is a mortgage calculator?
A mortgage calculator is a tool that helps you estimate your monthly mortgage payments based on the loan amount, interest rate, and loan term. It uses the standard mortgage formula to provide an accurate estimate.
How accurate is the mortgage calculator?
The mortgage calculator provides an estimate based on the inputs you provide. For exact figures, you should consult with a mortgage lender or financial advisor. The calculator assumes a fixed interest rate and does not account for prepayment penalties or other fees.
Can I use this calculator for different loan terms?
Yes, you can adjust the loan term in the calculator to see how different terms affect your monthly payments. The calculator supports loan terms from 5 to 30 years.