Network Mask Calculator

Network Mask Calculator

Calculate subnet details from any IP address and CIDR notation or subnet mask. Get network address, broadcast address, usable IP range, wildcard mask, and binary representations — instantly in your browser.

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Enter an IP address with CIDR notation (e.g., 192.168.1.0/24) or a subnet mask. Results calculate in real time as you type, showing all network details. Use the cheat sheet tab for a quick reference of all CIDR notations, or batch mode to calculate multiple subnets at once.

Caractéristiques

• Subnet mask conversion – Convert between dotted decimal, CIDR notation, and wildcard mask formats
• Network details – Calculate network address, broadcast address, usable IP range, and host count
• Binary representation – View subnet masks in binary for learning and verification
• Cheat sheet – Quick reference table of all CIDR notations with masks and host counts
• Batch calculation – Process multiple subnets simultaneously
• Résultats en temps réel – Calculations update instantly as you type
• Copy buttons – One-click copy for any calculated value