Numeric Base Convertor

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This page allows you to easily convert one type of number, into any other base (up to and including base36). For example, you can convert binary into the "normal" decimal system, octal into hexadecimal, or any other combination. You can enter numbers one at a time, or in bulk as a list - you can put one number on each line, or seperate them with spaces, commas or many other non-mumeric characters.
Click on any of the links at the top of the page to reveal (or hide) more information about this calculator.


If you are reading this paragraph, then you probably don't have JavaScript installed/enabled on your computer.
At this point in time the calculators on this site are entirely dependent on JavaScript. Given enough time and money it is hoped to develop a version in the future which will be able to operate independently. Since JavaScript runs on your own computer, rather than on this server, it has been possible to set up this site much more quickly than if a server-side language was used, and it is possible to serve far more pages with the available bandwidth.




Base2, known as Binary, only makes use of the digits one and zero, and is the main system used by computers. Base 10 is better known as Decimal, and is the normal way of counting for most people. Base 16 makes it easier to read a Binary number, and uses the letters A through to F to represent digits greater than 9. (Both capital letters and lower case have the same meaning.) Base 36 uses all 26 letters of the English alphabet, and is therefore the largest base that can exist with only one character per digit, hence the limit to this calculator.


  1. Enter a number into the text-box labelled 'Input:', either one at a time, or as a list
  2. Choose the base of your number from the drop-down list labelled 'Input Base:'
  3. Choose the base to convert to, from the drop-down list labelled 'Output Base:'
  4. Press the 'Convert' button
  5. Click the spanner icon next to any entry to Alter or Remove that value
  6. Press the 'Clear Results' button if you wish to discard the current results list, otherwise further amounts will be added to the same total.
Enter Data Here


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