Find a text's actual UTF-8 byte size, not just its character count.
Calculate an IPv4 subnet's network, broadcast, and usable host range.
Generate random, well-formed IPv4 addresses -- any range or private-only.
Generate a random color with its hex, RGB, and HSL values.
Convert an integer between any two number bases from 2 to 36.
Browse the full printable ASCII table, or look up a single character.
Convert between decimal (KB/MB/GB) and binary (KiB/MiB/GiB) storage units.
Compute the CRC-32 checksum of any text.
Convert between symbolic (rwxr-xr--) and numeric (754) Unix permissions.
Look up what any HTTP status code means, with a full reference table.
Generate random, well-formed MAC addresses for test data.