Network & DevOps ToolkitNumber Base Converter
Convert between decimal, hex, binary and octal.
Enter a value and see it in every base at once — handy for IP octets, masks, ports, MAC addresses and bit-flags.
Prefer a text tool?
Number Base (text)
0 words0 characters0 lines0 bytes
How do I read a subnet mask in binary?
Convert each octet to 8-bit binary; the count of leading 1s is the prefix length. 255.255.255.0 is 24 ones, i.e. a /24.
Why is hex everywhere in networking?
Hex maps cleanly to bytes (two hex digits = one byte), so MAC addresses, IPv6 and color values are far more compact in hex than decimal or binary.
Related tools
- Subnet / CIDR Calculator — masks and octets in context.
- Hash Generator — digests are shown in hex.
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