Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal

Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal

About Number Base Converter

Number Base Converter translates integers between four positional numeral systems - binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16) - entirely in your browser. It uses JavaScript BigInt, so it handles arbitrarily large numbers without precision loss.

How to use

Convert any number in a few clicks:

  • Type a number into any of the four fields.
  • The other three fields update instantly with the equivalent value in their base.
  • Click the copy icon next to any field to copy that value to the clipboard.

Private by design

All conversion runs locally in your browser with no server round-trip.

Type a number in any field and all other bases update instantly. Supports arbitrarily large integers.

Base 2
Base 8
Base 10
Base 16