Random MAC Address Generator Online
Runs 100% in your browser — your files never leave your device.
Testing DHCP servers, spoofing scenarios in a lab, or populating fixture data — sometimes you need MACs that look real. Generate up to a hundred at a time, optionally pinning a vendor prefix like 64:16:7F, and pick your separator (:, -, ., or none) and letter case. Randomness comes from your browser's cryptographic source.
How it works
- 1
Optionally pin a prefix
Keep the first bytes fixed to mimic a specific vendor.
- 2
Pick format options
Choose the separator, letter case, and how many to generate.
- 3
Generate and copy
One click mints the batch; another copies all of it.
Related tools
More network tools
IPv4 Subnet Calculator Online (CIDR) Parse any IPv4 address or CIDR block and get the netmask, network address, host range, broadcast address, and size — free, in your browser. IPv4 Address Converter (Decimal, Hex, Binary) Convert an IPv4 address to decimal, hexadecimal, binary, and IPv6-mapped notation in one place — free, instant, and in your browser. IPv4 Range to CIDR Expander Online Turn an IPv4 start–end range into the smallest enclosing CIDR block, with the expanded address count shown — free and in your browser.