Calculate complete IPv4 subnet information based on IP address and subnet mask.
SubnetCalculator is an open-source tool that allows you to quickly calculate IPv4 subnet information. Provide an IP address and subnet mask or CIDR prefix, and the tool will generate all relevant network details. The tool can be used for network design, validation, or learning purposes.
- Calculate network information:
- Network address
- Broadcast address
- First and last usable IP
- Total hosts
- Usable hosts
- Supports both subnet mask and CIDR notation input
- Clear, formatted output
- Export results to different formats (e.g. JSON, CSV)