MAC Address Generator

Generate locally administered unicast MAC addresses for networking, software development, testing, virtualization, and sample data.

Quantity

Format

Case

Generated MAC addresses

Results will appear here after you generate them.

What is a MAC Address?

A MAC address is a media access control address, a network identifier usually represented as six hexadecimal octets. MAC-style values are common in networking tools, device lists, virtualization settings, and test records.

MAC Address Format Explained

MAC addresses are commonly displayed with colons, hyphens, or no separators. This tool supports XX:XX:XX:XX:XX:XX, XX-XX-XX-XX-XX-XX, and XXXXXXXXXXXX formats, with uppercase or lowercase output.

Locally Administered vs Universally Administered Addresses

Universally administered MAC addresses are assigned through hardware vendor prefixes. Locally administered addresses are intended for local software-controlled assignment. This generator sets the locally administered bit and clears the multicast bit to produce unicast addresses for testing and sample-data workflows.

Common Uses

Networking tests

Create sample hardware-address values for network forms and validations.

Virtualization

Generate locally administered addresses for lab and VM examples.

Sample data

Populate demos, docs, fixtures, and mock records.

Software development

Test parsing, formatting, display, and copy workflows.

MAC Address Examples

Generated results follow valid MAC address syntax and are designed as locally administered unicast examples. They can be copied into network UI tests, fixture files, documentation, and demos.

Is this MAC address generator secure?

This tool uses browser cryptographic randomness where available and generates results on the client. Generated MAC addresses are for testing and sample data, not proof of ownership of any physical device.

How to use

1
Choose quantity
Select 1, 5, 10, 25, or 50 addresses.
2
Choose format
Pick colon, hyphen, or plain hexadecimal output.
3
Choose case
Select uppercase or lowercase characters.
4
Generate and copy
Generate MAC addresses and copy all current results.

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Frequently Asked Questions

What is a MAC address?

A MAC address is a hardware-style network identifier commonly shown as six hexadecimal octets.

Can two devices have the same MAC address?

Real network devices are intended to have unique MAC addresses, but duplicates can happen through manual configuration, virtualization, or cloned test data.

What is a locally administered MAC address?

A locally administered MAC address is marked as assigned by local software or configuration rather than by a hardware vendor. This generator creates locally administered unicast addresses for safer testing use.

Can I use these for testing?

Yes. These generated MAC addresses are suitable for sample data, documentation, software tests, network UI mockups, and virtualization examples.

Is this generator free?

Yes. This MAC address generator is free to use online.