conv mysql function is to convert numbers from one base to other

conv()

WE can convert any number from one mathematical base number system to another base number system by using conv() function in MySQL. Here is the syntax

conv(n,base_from, base_to);

Here n is any number and base_from is base of n ( the number ) at present. base_to is the base of the number we want to covert. Minimum base value is 2 and maximum base value is 36. Let us try one example

Select conv('b',16,2);

Here number is b of base 16 , after conversion it will have base of 2 . The output is here

Now let us try one octal number

Octal number to decimal ( base 10 )

conv(11,8,10)

In above code number 11 is of base 8 and after conversion it became decimal number of base 10. Here is our output

In conventional way it is 11=1x8¹ + 1x8⁰ , so 11 in octal is equal to 9 in decimal. You can also use MySQL oct function to covert decimal number to Octal system

Hex to binary

Hex numbers have base of 16 and binary is of base 2

select  conv('D',16,2)

Output is

Decimal to Hex

Decimal is of base 10 and Hex is of base 16

select conv(10,10,16);

The output is here

Convert numbers from decimal to Octal base system

We can convert decimal number to octal number by using oct function. Here are examples

select oct(7); // output 7

select oct(8); // out put 10

select oct(9); // out put 11

select oct(10); // out put 12

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