Loan & Mortgage
Estimate monthly mortgage payments, adjust values using sliders, and generate interactive amortization schedules.
1. Configure Parameters
Loan Principal
Interest Rate (APR)
Loan Duration
2. Payment Summary
Principal (44%)Interest (56%)
Amortization Schedule (Annual)▼
| Year | Annual Payment | Principal Paid | Interest Paid | Remaining Balance |
|---|
💡 How to Use & Loan Math Formulas▼
How to Use:
- Adjust the Loan Principal amount using the slider or numeric input to represent the total amount borrowed.
- Define the Interest Rate (APR) representing the yearly interest rate charged by the lender.
- Select the Loan Duration in years.
- Observe the estimated monthly payments, total interest paid, and total payment cost update instantly. Click 📋 to copy any result.
- Expand the Amortization Schedule to observe year-by-year remaining balances and interest details.
Amortization Math Formula Used:
We compute the monthly payment ($M$) utilizing the standard fixed-rate amortization mathematical formula:
M = P * [ r(1 + r)^n ] / [ (1 + r)^n - 1 ]
Where:
- P = Principal amount borrowed (e.g., $400,000)
- r = Monthly interest rate, calculated as Annual Rate / 12 months (e.g., 6.5% APR = 0.065 / 12)
- n = Total number of monthly periods, calculated as Years * 12 months (e.g., 30 years = 360 payments)