SILENT MAJORITYOFFLINE TOOLS

Network / Engineering tools

MAC Address Normalizer

Convert 48-bit MAC addresses to colon, hyphen, and Cisco formats and inspect address bits. Work locally without uploading network information.

Runs entirely on your deviceNo uploads, accounts, cookies, or personal tracking.

Normalize MAC addresses

Local processing · no input storage

Network tools
One address per line. Colon, hyphen, dotted, and 12-digit hexadecimal forms are accepted.

Unicast/multicast and local/universal bits are reported. No manufacturer identification or OUI lookup is performed.

Text lists: up to 500 non-empty lines and 256 KiB per field. Tabular results: up to 5,000 rows.

Enter your data, then select normalize mac addresses.
1. Add your data

Enter your network data or load the worked example.

2. Choose the result

Normalize MAC addresses and review the result and assumptions.

3. Save it locally

Copy the result or download it for your engineering workflow.

About this tool

Use MAC Address Normalizer without an upload

Convert 48-bit MAC addresses to colon, hyphen, and Cisco formats and inspect address bits. Work locally without uploading network information.

The operation runs in the current browser tab. Tool input is not included in aggregate analytics, and the standalone download makes no analytics requests.

Network toolsDeveloper tools