Tools
Free tools for network engineers.
-
Base64, hex, and text converter
Free three-way Base64 ⟷ hex ⟷ text converter. Encode, decode, or inspect the bytes behind a string. UTF-8 safe, supports URL-safe Base64 and uppercase / space-separated hex. Runs entirely in your browser.
-
MAC address whois
Free MAC address / OUI vendor lookup. Identify the manufacturer behind any 48-bit MAC against the IEEE MA-L, MA-M, and MA-S registries. Runs entirely in your browser.
-
Subnet Calculator
Free IPv4 and IPv6 subnet calculator with VLSM splitter. Compute network, broadcast, usable range, host count, address type, and split a parent network into variable-length subnets.