Webmaster Tools•Free Online Tool
IPv4 Subnet & CIDR Calculator
Comprehensive IPv4 CIDR and Subnet Calculator. Enter an IP address with subnet mask (e.g., /24) to compute network boundaries, broadcast address, usable host range, total IP addresses, wildcard masks, and binary netmask.
100% Free & Private
Quick Presets:
Usable Host IPs
254
Total Host IPs
256
Network Class
Class C
CIDR Notation
/24
CIDR Network Breakdown
Network Address(Identifies the network route)
192.168.1.0
Subnet Mask(Defines subnet boundaries)
255.255.255.0
Broadcast Address(Packets sent to all network hosts)
192.168.1.255
Usable Host Range(Valid addresses for client devices)
192.168.1.1 - 192.168.1.254
Wildcard Mask(Used in ACL and OSPF router configurations)
0.0.0.255
Binary Netmask(32-bit binary representation)
11111111.11111111.11111111.00000000
How to Use IPv4 Subnet & CIDR Calculator
1
Enter IPv4 Address
Type any valid IP address (e.g. 192.168.1.1).
2
Choose Subnet Mask
Select the CIDR prefix from /0 to /32.
3
View Network Breakdown
Inspect usable host range, broadcast address, and wildcard mask.
Frequently Asked Questions
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