IPv4 Subnet Calculator
Free, browser-based IPv4 subnet calculator. 100% Client-Side and Privacy-First.
Capabilities
A bitwise utility for determining network ranges, broadcast addresses, and usable host counts with instant CIDR visualisation.
Target Use Cases
- Planning network infrastructure and VLANs
- Determining usable host ranges for subnets
- Visualising CIDR block allocations
- Troubleshooting routing and mask issues
Pure bitwise operations — no library, no lookup tables. Network ranges, broadcast addresses, and usable host counts calculated directly from binary arithmetic.
Your IPv4 Address
Your IP Information
Parsed in 0ms
IPv4 Subnet Calculator
24
Calculated IPv4 Subnet
Parsed in 0ms
100% Client-Side • Privacy-First — nothing leaves your browser.