Binary & Hex Converter

01 / Enter a value

Any base, live

Decimal (base 10) Binary (base 2) Hexadecimal (base 16) Octal (base 8)

8-bit builder

Click bits on and off. This is the same place-value row you use for subnet masks.

Storage units

1000 vs 1024

• 1 byte = 8 bits. A nibble = 4 bits = one hex digit.
• Decimal (SI) prefixes step by 1000: KB, MB, GB, TB. Drive makers and network speeds use these.
• Binary (IEC) prefixes step by 1024: KiB, MiB, GiB, TiB. Operating systems usually measure in these, even when they print "GB".
• Lowercase b means bits (Mbps); uppercase B means bytes (MB).