Binary, Decimal and Hexadecimal Converter

Very often in GCSE and A Level Computer Science you are going to want to convert between different number bases such as binary, decimal and hexadecimal. Of course, you need to know how to do this manually, but it’s also very helpful sometimes to use a calculator – either to check your work or when your current focus is not on how to convert between number bases but on some other topic that makes use of these conversions, such as IPv4 addresses for example.

The calculator below can be used to convert between binary, decimal and hexadecimal, as well as other number bases should you wish. Although for GCSE and A Level computer Science, those are the most important bases to be familiar with, it can be quite informative to experiment with other bases, and this will certainly help to consolidate your understanding.

For now there is no provision for negative numbers. I may add this functionality at a later date. For now, I hope you find this tool helpful.

Number Base Converter


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