Number Base Converter (Binary, Hex, Decimal)

Convert numbers between Binary, Octal, Decimal, Hexadecimal, and any custom base.

  • 100% free
  • Private in browser
  • No signup
  • No watermarks
Bit Length
8
Byte Size
1 bytes

Decimal (Base 10)

255

Binary (Base 2)

11111111

Hexadecimal (Base 16)

FF

Octal (Base 8)

377

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About Number Base Converter (Binary, Hex, Decimal)

Number Base Converter helps you type the number to convert instantly in your browser. Nothing is uploaded.

How to use Number Base Converter (Binary, Hex, Decimal)

  1. Type the number to convert.
  2. Choose the source base.
  3. Copy any of the converted representations.

Key features

  • Binary, octal, decimal, hex
  • Custom bases up to 36
  • BigInt precision for huge numbers
  • Optional prefixes

Frequently asked questions

How large numbers are supported?
Arbitrarily large — conversions use BigInt, so precision never drops.