Calculate CIDR to Subnet Mask Online
Enter an IP with a CIDR prefix like /22 to see the equivalent subnet mask, wildcard mask, and network range. The prefix length is the count of leading 1 bits in the mask.
IP Subnet Calculator
Calculate IP subnet details, network ranges, and CIDR notation
192.168.1.0192.168.1.255255.255.255.00.0.0.255192.168.1.0/24192.168.1.1 - 192.168.1.254192.168.1.1192.168.1.254256254C0xC0A8016411000000.10101000.00000001.01100100Split into two /25 subnets
Dividing 192.168.1.0/24 one prefix deeper.
Common Subnet Masks
Quick Start
- 1Enter an IP address with CIDR notation (e.g., 10.0.0.0/22)
- 2Read the dotted-decimal subnet mask
- 3Check the wildcard mask and host count
- 4Copy the values for your network config
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