Free tools
MAC address tools.
Small, focused tools that run in your browser. No signup, no API key.
Generator
Random MAC address generator
Generate random MAC addresses entirely in your browser: unicast/multicast, universal/local, or a real registered vendor prefix. Bulk generation with CSV/JSON export.
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Block capacity calculator
Work out how many devices an IEEE MA-L, MA-M, or MA-S assignment covers: address capacity, devices supported per unit, and an estimated exhaustion date.
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