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Kordu Tools

Loan Calculator

Calculate loan repayments, compare rates, and see how extra payments save time and money.

Loan details

Monthly payment£303.43
Total repayment£18,205.71
Total interest£3,205.71

Early repayment

What if you pay extra each month?

New payoff time—
Time saved—
Interest saved—

Compare another option

Enter a different rate or term to compare side by side.

How to use

  1. 1

    Enter your loan details

    Type the loan amount, annual interest rate, and term. Toggle between months and years for the term.

  2. 2

    Review repayment figures

    See your monthly payment, total repayment, and total interest calculated instantly.

  3. 3

    Try early repayment

    Enter an extra monthly payment amount to see how many months you could save and how much less interest you would pay.

  4. 4

    Compare alternatives

    Enter a different interest rate or term to compare the two options side by side.

Frequently asked questions

How is the monthly payment calculated?
The standard amortisation formula is used: M = P[r(1+r)^n] / [(1+r)^n - 1], where P is the loan amount, r is the monthly interest rate, and n is the total number of monthly payments.
Does this work for variable-rate loans?
This calculator assumes a fixed interest rate throughout the loan. For variable-rate loans, use the comparison feature to model different rate scenarios.
How accurate is the early repayment calculation?
It simulates month-by-month repayment with the extra amount applied to the principal each month. Actual savings may differ if your lender applies different rules for overpayments.
Is my data sent anywhere?
No. All loan calculations happen entirely in your browser. Nothing is uploaded, stored, or logged.

Enter a loan amount, interest rate, and term to see your monthly

repayment, total cost, and total interest instantly. Toggle between

months and years for the term. Use the early repayment section to see

how paying extra each month reduces your payoff time and total interest.

Compare two different rates or terms side by side to find the better

deal. Suitable for car loans, personal loans, and any fixed-rate

borrowing. All calculations run in your browser with nothing sent to

any server.

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