Compound Interest Calculator
Calculate the final amount and interest from a starting sum, monthly deposits and an annual rate, with compounding.
Compound Interest Calculator
Calculate the final amount and interest from a starting sum, monthly deposits and an annual rate, with compounding.
About this tool
Privacy
What you enter is calculated on this device and never sent to a server.
How to use
- Enter numbers or paste text in the box above, and pick any options you need.
- The result appears right away. Generators (UUID, password) make a new one each time you press the button.
- Copy the result and paste it wherever you need it.
Frequently asked questions
Does it handle monthly contributions?
Yes. Enter a starting amount, a monthly contribution, the annual rate and the term, and it shows the final balance and the interest earned with monthly or yearly compounding.
Is the Compound Interest Calculator free?
Yes. It is free with no sign-up, no install and no usage limit. It runs right in your browser.
Is what I enter sent to a server?
No. Everything is calculated on your device, and nothing you type is sent or stored. Only the currency converter downloads the latest exchange rates.
Does it work on a phone?
Yes. It works in any modern browser on phones, tablets and computers, so there is no app to install.