Simple Interest Calculator – Interest and Maturity Amount

Simple Interest Calculator

Work out simple interest and the final amount using principal, annual interest rate and time.

Enter your details

Change the values below and calculate your estimate.

Country / region United StatesIndiaUnited KingdomCanadaAustraliaOtherDisplay currency USD — US DollarINR — Indian RupeeGBP — British PoundCAD — Canadian DollarAUD — Australian DollarEUR — Euro

US terminology selected. Labels follow your country; currency changes the display format only.

Currency changes the display format only; it does not convert the amount you enter. Enter values already expressed in the selected currency.

Starting amount Annual interest rate (%) Time period (years)

Your results

Illustrative estimate based on the values entered.

ResultsEnter details and calculate

Results are estimates for general planning only. Actual charges, lender terms, tax rules and returns may differ. This calculator does not provide financial, investment, tax or lending advice.

How this calculator works

Work out simple interest and the final amount using principal, annual interest rate and time. Enter accurate figures, select the relevant options and choose Calculate to view the breakdown. Results depend on the assumptions and values you provide.

Important note

This tool is provided for educational and planning purposes. It does not guarantee a financial outcome or approval. Confirm important decisions with a qualified professional or the relevant institution.