Online Simple Interest Calculator

Enter the amount of the savings deposit (initial amount) and the interest rate. Then determine the length of the deposit time period. The calculation is done in years but you may enter either years or days. Click on Calculate and determine the interest, amount due and total amount. When entering the month, use its number rather than its name.




From (inclusive)

To (inclusive)

Initial amount ($)

Interest Rate




From (inclusive)

To (inclusive)

Day(s) or

Week(s) and


Total interest (%)

Amount due to interest ($)

Final amount ($)

Footnote: This Online Simple Interest Calculator is provided to you free of charge, and on an "AS IS" basis, without any technical support or warranty of any kind from including, without limitation, a warranty of merchantability, fitness for a particular purpose and non-infringement.

Updated On: 15.01.15

  1. On 16-Nov-2012, Maria wrote: 
    For some reason when you click Tab to go to the next box it jumps to the bottom. Hope you can fix that, makes it tedious. Thanks
    Your reply to Maria
    • On 17-Nov-2012, Peter Tong replied: 
      Hi Maria, the tab order now hopped nicely from field to field. Thank you for your feedback. Peter
      Your reply to Peter Tong

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