How the Number Base Converter works

Numbers are parsed with arbitrary precision integers, so there is no rounding even for values far beyond what a normal number type can hold. Prefixes 0x, 0b and 0o select the base automatically; otherwise the base setting is used, from 2 up to 36. Negative numbers and underscores as digit separators are accepted.

Each line is converted separately and the result shows binary, octal, decimal, hexadecimal and base 36 forms, with a clear message if a digit is not valid in the chosen base.

When it is useful

• •Reading memory addresses, bit masks and color values.
• •Checking homework in computer science courses.
• •Converting IDs that use base 36 or base 62 style encodings.
• •Working with file permissions in octal.

Frequently Asked Questions