IP Subnet Calculator
Calculate IP subnets and CIDR notation online for free. Compute network address, broadcast, host range, and wildcard mask instantly.
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Coming SoonNetwork & API
The full version of IP Subnet Calculator is being built right now. We add new fully functional tools every week. In the meantime, you can use the basic workspace below.
About IP Subnet Calculator
Calculate IP subnets and CIDR notation online for free. Compute network address, broadcast, host range, and wildcard mask instantly.
This tool is completely free and runs 100% in your browser. Your data is never uploaded to any server — everything is processed locally on your device for maximum privacy and speed.
About IP Subnet Calculator
Calculate IP subnets and CIDR notation online for free. Compute network address, broadcast, host range, and wildcard mask instantly.
Features
- 100% free with no sign-up required
- Runs entirely in your browser for full privacy
- No data stored, no files uploaded to servers
- Works on desktop and mobile devices