Free online tool

Loan Calculator

Estimate fixed monthly loan payments, total repayment and total interest.

Enter your values

%

Monthly payment

Enter the values and choose Calculate.

Monthly payment
Total payment
Total interest

How to use this tool

Compare the long-term cost of a fixed-rate loan before borrowing.

  1. Enter your values
  2. Calculate
  3. Copy · Share

Formula and method

Payment = principal × monthly rate × (1 + rate)^n ÷ ((1 + rate)^n − 1)

Worked example

A 20,000 loan at 6% for 5 years uses 60 equal monthly payments.

Frequently asked questions

Is this tool free and private?

Yes. It is free to use without an account, and the calculation runs in your browser.

Loan Calculator

Estimate fixed monthly loan payments, total repayment and total interest.

Transparency

Sources & methodology

Calculation method
Payment = principal × monthly rate × (1 + rate)^n ÷ ((1 + rate)^n − 1)
Evidence basis
Transparent arithmetic using values entered by the user.
Applies to
No statutory reference year. Results use the values and assumptions entered now.
Last reviewed
Limitations
The result excludes fees, taxes, changing rates and contract-specific rules unless entered explicitly.

Content basis and verification

· Calculations run in your browser. Check the formula and assumptions on this page, and confirm important financial, tax, medical or legal decisions against current official guidance.