How it is calculated
The letters A–Z stand for the digits from 10 to 35. Letter case does not matter. A fractional part and a minus sign are not converted here.
A digit cannot be greater than or equal to the base
Where the numbers come from
- Number
- From base
- To base
Example
255 from decimal to hexadecimal is FF. In binary it is 11111111.
Questions
Why not 0x at the start?
You do not need a prefix. For a hexadecimal number, FF is enough.
Will base 2 accept the digit 2?
No. Binary uses only 0 and 1.
Long numbers?
While the value still fits in an exact integer. The calculator rejects strings that are too long.