Loan Calculator
Calculate monthly loan payments, total interest, and view amortization schedule. Works for mortgages, auto loans, and personal loans.
Monthly Payment$1,580.17
Principal$250,000
Total Interest$318,861
Total Payment$568,861
Total Payments360
Principal (43.9%)
Interest (56.1%)
How It Works
This calculator uses the standard amortization formula: M = P × [r(1+r)^n] / [(1+r)^n - 1], where M is monthly payment, P is principal, r is monthly interest rate, and n is number of payments. Each payment includes both principal and interest, with early payments being mostly interest.
All calculations happen locally in your browser. This is for estimation purposes only — actual loan terms may vary.
How This Tool Was Built
This tool was created entirely by AI. Here's the exact prompt used to generate it:
Prompt Used
Create a Loan Calculator tool with these features: 1. Inputs: - Loan amount (principal) with $ prefix - Annual interest rate with % suffix - Loan term in years with preset buttons (15, 20, 30 years) 2. Results card showing: - Monthly payment (large, prominent) - Total payment amount - Total interest paid - Number of payments 3. Visual bar showing principal vs interest breakdown 4. Toggle to show/hide amortization schedule 5. Amortization schedule table: - Month number - Payment amount - Principal portion (green) - Interest portion (red) - Remaining balance 6. Use standard PMT formula for calculations 7. Info box explaining the formula Make it professional with green as the accent color. Include disclaimer about estimates.
Claude AI Model
6,800 Tokens Used
AI-Generated Code Origin