Back to all tools
Number Base Converter
FREEConvert numbers between binary, octal, decimal and hex
Number Base Converter
Binary
11111111
Octal
377
Decimal
255
Hexadecimal
FF
Step 1: Parse "255" as base-10 → Decimal value = 255
Step 2: Binary = 255.toString(2) = 11111111
Step 3: Octal = 255.toString(8) = 377
Step 4: Hexadecimal = 255.toString(16) = FF
About this tool
Convert numbers between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16). Also supports custom bases up to 36. Shows step-by-step conversion.