Binary and Hex Converter
Convert exact integers across four bases. Switch to text for UTF-8 byte conversion.
Up to 256 binary digits. Signs and matching 0b, 0o, 0x prefixes work. Whole numbers only.
binary
octal
decimal
hex
How the conversion works
101101 in binary is 32 + 8 + 4 + 1 = 45 in decimal.
Hex bytes
Binary bytes
Decoded hex bytes
Decoded binary bytes
What is a number base?
Binary uses 0 and 1; octal uses 0–7; decimal uses 0–9; hexadecimal uses 0–9 and A–F. The same integer has a different written form in each base. UTF-8 text is a sequence of bytes, so a letter may use more than one byte.
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