192.168.1.0/24
| Network Address | 192.168.1.0 |
| Broadcast Address | 192.168.1.255 |
| Subnet Mask | 255.255.255.0 |
| Wildcard Mask | 0.0.0.255 |
| First Usable Host | 192.168.1.1 |
| Last Usable Host | 192.168.1.254 |
| Total Hosts | 256 |
| Usable Hosts | 254 |
| Network Class | C |
| IP Type | Private |
| CIDR Notation | /24 |
| Binary Mask | 11111111.11111111.11111111.00000000 |
Subnet Calculator — IPv4 CIDR Network Calculator
Enter an IP address and CIDR prefix to calculate network address, broadcast address, first/last usable host, subnet mask, wildcard mask, total hosts, and network class.
How It Works
Enter an IPv4 address and a CIDR prefix length (0-32). The tool converts the IP to a 32-bit integer, applies the subnet mask to determine network and broadcast addresses, and calculates all related values.
Common Use Cases
- Plan IP address allocation for networks
- Determine usable host ranges for subnets
- Convert between CIDR notation and subnet masks
- Study for networking certifications
Frequently Asked Questions
CIDR (Classless Inter-Domain Routing) notation like /24 specifies how many bits are used for the network portion of an IP address. /24 means the first 24 bits are the network, leaving 8 bits for hosts.
Currently this tool only supports IPv4 addresses. IPv6 subnet calculation may be added in a future update.