Static IP Without DHCP: Step-by-Step Setup

Updated 14 November 2026 · Standard formula, shown below

When no DHCP server is available, your device cannot automatically obtain an IP address, leaving you without network connectivity. Setting a static IP address manually gives your device a fixed, usable address so you can join or create a network. This guide walks you through the process on Windows, macOS, Linux, and common router interfaces, with the exact settings you need to enter.

What You’ll Need

Access to the device’s network settings (administrator or root privileges)
An unused IP address within your network’s range
The subnet mask (usually 255.255.255.0 for small networks)
The default gateway IP (usually your router’s IP, e.g., 192.168.1.1)
A DNS server IP (can be your router’s IP or a public DNS like 8.8.8.8)

Step-by-Step

Determine your network’s IP range. If you are connecting to an existing network, find the IP range used by other devices (e.g., 192.168.1.x). If you are creating a direct connection, choose a private range like 192.168.1.0/24.
Pick an unused IP address. Choose an IP like 192.168.1.100 that is not already in use. Avoid the router’s IP (often .1) and the broadcast address (often .255).
Open network settings.
- Windows: Go to Settings > Network & Internet > Ethernet (or Wi-Fi). Click “Change adapter options,” right-click your adapter, select “Properties,” then select “Internet Protocol Version 4 (TCP/IPv4)” and click “Properties.”
- macOS: Go to System Settings > Network, select your connection (Wi-Fi or Ethernet), click “Details,” then “TCP/IP.”
- Linux (GUI): Go to Settings > Network, click the gear icon next to your connection, then go to the IPv4 or IPv6 tab.
- Linux (command line): Use nmcli (NetworkManager) or edit /etc/network/interfaces.
Set the IP address, subnet mask, and gateway. In the IPv4 settings, choose “Manual” (or “Static”) and enter:
- IP address: e.g., 192.168.1.100
- Subnet mask: 255.255.255.0 (or prefix length /24)
- Gateway: e.g., 192.168.1.1 (the router’s IP)
Set DNS servers. In the DNS field, enter a DNS server IP. You can use the gateway IP (e.g., 192.168.1.1) or a public DNS like 8.8.8.8 and 8.8.4.4. On some systems, you may need to disable “Automatic DNS.”
Save and apply. Click OK, Apply, or Save. On Windows, you may need to close the properties window. On Linux, restart the network connection or run sudo systemctl restart NetworkManager.
Verify the configuration. Open a command prompt or terminal and run ipconfig (Windows) or ip addr (Linux/macOS) to confirm the IP address is set. Then test connectivity by pinging the gateway: ping 192.168.1.1.

Common Mistakes

Using an IP that is already in use, causing an IP conflict.
Entering the wrong subnet mask (e.g., 255.255.255.0 vs. 255.255.0.0), which can make the network unreachable.
Forgetting to set the default gateway, which prevents access to other networks.
Using a public DNS without internet access, which may cause name resolution failures.
Setting the IP outside the network’s range (e.g., using 192.168.2.x on a 192.168.1.x network).

Tips

Always choose an IP address outside the DHCP range if a DHCP server might later be added, to avoid conflicts.
Write down the static IP settings in a safe place for future reference.
If you are connecting two devices directly (without a router), use a crossover cable (or modern auto-MDIX) and set both devices to the same subnet, e.g., 192.168.1.1 and 192.168.1.2.
Use a subnet mask of 255.255.255.0 for most home networks.
For IPv6, you may need to set a static address as well, but this is more complex; focus on IPv4 for simplicity.

Troubleshooting

No network connectivity after setting static IP: Check the subnet mask and gateway. Ensure the IP is not already in use (ping it from another device). Try a different IP in the same range.
Can ping the gateway but not the internet: Check DNS settings. Try using a public DNS like 8.8.8.8. If that works, your router’s DNS may be down.
IP conflict error: Another device is using the same IP. Choose a different IP, or release the conflict by changing the other device’s settings.
Settings revert after reboot: Some systems may revert to DHCP if the static configuration is not saved correctly. Re-check the settings and ensure you clicked “Apply” or “Save.” On Linux, make sure the configuration is persistent (e.g., using NetworkManager with nmcli).
Cannot access the router’s admin page: Ensure the gateway IP is correct. Try pinging the gateway. If it fails, check the physical connection and the IP range.

Frequently Asked Questions

What IP address should I use for a static IP?

Use a private IP address in the range of your network, typically 192.168.x.x or 10.x.x.x. Avoid the router’s IP (usually .1) and the broadcast address (usually .255).

What is the default gateway?

The default gateway is the IP address of the router that connects your network to other networks, usually 192.168.1.1 or 192.168.0.1. It is the device that forwards traffic to the internet.

What subnet mask should I use?

For most home networks, use 255.255.255.0 (also written as /24). This allows up to 254 devices. If you are unsure, check the subnet mask of another device on the same network.

Can I set a static IP on a Wi-Fi connection?

Yes, the process is similar to Ethernet. In your Wi-Fi settings, look for the IPv4 or TCP/IP section and choose “Manual” or “Static.” Enter the same details: IP, subnet mask, gateway, and DNS.

What happens if I set an IP that is already in use?

You will get an IP conflict, and one or both devices may lose network connectivity. Always check for unused IPs by pinging the address before setting it.

Do I need to set a static IP for IPv6?

Not usually. IPv6 often uses stateless autoconfiguration, but if you need a static IPv6 address, you can set it manually in the same network settings, though it requires a valid IPv6 prefix and gateway.

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.