🌐 IP Subnet Calculator
Calculate subnets, CIDR, and IP ranges
Network Address
192.168.1.0
Broadcast Address
192.168.1.255
First Usable Host
192.168.1.1
Last Usable Host
192.168.1.254
Number of Usable Hosts
254
Subnet Mask
255.255.255.0
Wildcard Mask
0.0.0.255
CIDR Notation
192.168.1.0/24
Step-by-Step Binary Conversion
1. IP Address in Binary
11000000.10101000.00000001.00000000
2. Subnet Mask in Binary (/24 = 24 ones, 8 zeros)
11111111.11111111.11111111.00000000
11111111.11111111.11111111.00000000
3. Network Address = IP AND Mask
11000000.10101000.00000001.00000000 = 192.168.1.0
4. Broadcast Address = Network OR Wildcard
11000000.10101000.00000001.11111111 = 192.168.1.255
5. Usable Host Range
192.168.1.1 — 192.168.1.254 (254 hosts)
How to Use IP Subnet Calculator
- 1Enter an IP address and subnet mask or CIDR prefix.
- 2The calculator displays the network address, broadcast address, and usable host range.
- 3View the number of available hosts and the wildcard mask.
About IP Subnet Calculator
Calculate IP subnets, CIDR ranges, network addresses, and broadcast addresses instantly. This IP subnet calculator supports both IPv4 and CIDR notation for network planning and troubleshooting.
Frequently Asked Questions
What is CIDR notation?
CIDR (Classless Inter-Domain Routing) notation uses a slash followed by a number (e.g., /24) to indicate the subnet mask length in bits.
Does it support IPv6?
This calculator focuses on IPv4 subnetting. IPv6 support may be added in a future update.