This is a program designed to help pupils practice conversions between binary, denary and hexadecimal for GCSE Computer Science. Attacthed is a .txt file. You will need to copy and paste the code in to any Python IDE of your choosing. There are six conversion in this program including: -Binary to Denary Denary to Binary Binary to Hex Hex to Binary Denary to Hex Hex to Denary Pupils load up the program, choose one of the above options and then generate a number. They then will have to convert the number to the target base number system. They could use a white board in front of them to help work this out. Hope you find this helpful and please leave feedback if you have any spare time.