๐ Unit Conversion
Number Base Converter
Different bases are useful for different jobs: binary for bit patterns, hexadecimal for memory addresses and colours, octal for Unix permissions. This converter shows all four at once.
How it works
Number
From base
To base
Result
Decimal
Binary
Hexadecimal
Octal
Frequently asked questions
How do I use the Number Base Converter?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.