ToolPatch

One page. One job. Done.

← Back to all tools
Financial

Loan Calculator

Calculate monthly payments and total interest for loans.

Last validated: Pending

Use this free online Loan Calculator to compute monthly payments, total interest, and full amortization schedules for fixed-rate loans with optional additional payments. Use it for budgeting, pricing, forecasting, and comparison work where small input changes can materially affect the final decision. The form focuses on Loan Amount ($), Annual Interest Rate (%), Loan Term (years) and returns Results, so you can move from input to answer without setting up a spreadsheet or custom script. Run one realistic example, adjust the inputs, and compare how the result changes before you copy or share it. The output is an estimate rather than financial advice, so confirm assumptions, taxes, fees, and policy details before making commitments.

Permalink

Input Pattern

Enter values in the left panel, keep units explicit, run the calculation, then copy or share the result. Invalid fields are highlighted immediately.

Loan Calculator

Calculate monthly payments and total interest for loans.

Results

Loan Amount: $20,000.00

Interest Rate: 5.00%

Term: 5.0 years (60 payments)

Monthly Payment: $377.42

Total Paid: $22,645.48

Total Interest: $2,645.48

How to use this tool

  1. Enter Loan Amount ($), Annual Interest Rate (%), Loan Term (years) for the loan calculator, keeping units, dates, or text format consistent with the form labels.
  2. Confirm the currency, time period, rate, and fee assumptions before calculating the estimate.
  3. Click "Run the tool" and review Results for the primary output.
  4. Test a conservative and aggressive scenario so the decision is not based on a single fragile estimate.

Worked Example

Auto-generated from the tool's current default or entered inputs.

Example Inputs

  • Principal: 20000.0
  • Annual rate: 5.0
  • Term years: 5.0
  • Monthly payment: 377.42467288021976
  • Num payments: 60

Expected Outputs

  • Principal: 20000
  • Annual rate: 5
  • Term years: 5
  • Monthly payment: 377.424673

Interpretation

Explore more versions

Tailored guides for specific audiences, regions, and scenarios.

Financial planning tools

Promote loan comparison services, financial planning software, and banking products.

Sponsored