Finance

Loan Calculator

Plan your monthly payment and compare principal, interest, and total repayment.

About this tool

Loan Calculator calculates results in your browser. Check important financial, medical, or planning decisions with an appropriate professional.

GUIDE

How to use this calculator

Use the loan calculator to estimate a regular payment, total repayment, and total interest before comparing borrowing options. You can choose a currency, set a start date, review the amortization schedule, and see how principal and interest change over time.

Calculation method

Fixed payment = principal × periodic rate × (1 + rate)^n ÷ ((1 + rate)^n − 1)

Quick examples

Compare a 5-year and 7-year repayment plan
See the interest cost of a 1% annual rate
Review the balance after each payment
Export the monthly schedule as CSV

Steps

Enter the loan amount, annual interest rate, and repayment period.
Choose months or years and select the currency.
Set the loan start date if you need payment dates.
Review monthly payment, total interest, chart, and detailed schedule.

How is the monthly payment estimated?

For an amortizing loan, the calculator applies the standard fixed-payment formula using the principal, periodic interest rate, and number of payments.

Does the result include fees or taxes?

No. The estimate covers principal and stated interest only unless you add those costs to the loan amount yourself.

Why does the interest share change each month?

Interest is calculated on the remaining balance, so the interest portion generally falls as more principal is repaid.

Loan payment estimator

Estimate payments, repayment dates, and the share of principal versus interest.

Loan amount$Annual rate%CurrencyCurrency selection changes the display symbol only; it does not convert exchange rates.

Repayment period

Term (years)yearsLoan start date

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