IP Subnet Calculator
Plan IPv4 networks with the free IP Subnet Calculator. Enter an IPv4 address and subnet prefix to calculate network details such as the network address, broadcast address, subnet mask and host capacity. Use the results for network configuration, troubleshooting and infrastructure planning. Check special-purpose and reserved address ranges when designing production networks.
Broadcast: 192.168.1.255
Usable hosts: 254
What is IP Subnet Calculator?
Calculate IPv4 subnet information with the free IP Subnet Calculator. Enter an IPv4 address and subnet prefix to determine details such as the network address, subnet mask, broadcast address and host capacity. Use the results for IP address planning, network configuration and troubleshooting. Consider reserved addresses, special-purpose ranges and your network design requirements when planning production infrastructure.
Why use this tool?
- Create configuration files from a few choices instead of writing them from scratch.
- Reduce syntax mistakes in YAML and server settings.
- Get a starting point you can adapt to your environment.
How to use IP Subnet Calculator
- Step 1. Choose the options for your setup.
- Step 2. Review the generated configuration.
- Step 3. Copy it into your project and test it in a safe environment first.
Common use cases
Important notes
- Generated configuration is a starting point, so review it before deploying.
- Never include real secrets or passwords in generated files.
- Syntax and defaults can differ between tool versions.
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IP Subnet Calculator FAQ
What is IP Subnet Calculator?
Calculate IPv4 subnet details, including network address, broadcast address, subnet mask, usable host range and host capacity for network planning.
Do I need an account to use IP Subnet Calculator?
No. You can use it without creating an account.