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# PowerShell: Get Network Adapter MTU
- URL: https://www.filipkonopik.com/powershell-get-network-adapter-mtu/
- Published: 2026-07-27T11:40:32.000Z
- Updated: 2026-08-06T05:47:07.000Z
- Author: Filip Konopík
- Tags: Connectivity

Need to check the MTU (Maximum Transmission Unit) size configured on a network adapter - for troubleshooting fragmentation issues or confirming a network configuration? This one-liner pulls it straight from the system.

Prerequisites:

- Privileges: None
- Module: Built-in, no import needed

Quick Command:

```powershell
Get-NetAdapter | Select-Object Name, MtuSize
```

Example Output:

```powershell
Name                    MtuSize
----                    -------
Bluetooth Network Conn.    1500
Wi-Fi                      1500
Ethernet                   1500
```

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How It Works:

- Get-NetAdapter returns every network adapter recognized by the system, alongside its configured MTU.
- MtuSize shows the maximum packet size (in bytes) the adapter will send without fragmenting it - 1500 is the standard default for Ethernet and Wi-Fi, based on the original Ethernet specification.
- A mismatched MTU between two communicating devices (e.g. one set higher than the network path supports) can cause packet fragmentation or connectivity issues, particularly over VPNs or certain network configurations.