Enter an IPv4 address and subnet mask or CIDR prefix to calculate network address, broadcast address, usable host range, wildcard mask and subnet size. The tool helps understand how an address block is divided.
Use it when configuring routers, firewalls, VPNs, hosting networks or documentation for infrastructure. It is intended for quick calculations and helps avoid manual binary subnet mistakes.
✓Calculate IPv4 network address, broadcast address and host range.
✓Use CIDR prefix or subnet mask depending on your workflow.
✓Helpful for routers, firewalls, VPNs, hosting and documentation.
✓Avoid manual subnet math mistakes when planning address ranges.
✓Use the calculated ranges when planning networks, firewall rules and address allocation.
✓The tool helps avoid mistakes when you split IPv4 networks into smaller subnets.
