Subnet & CIDR Calculator

Deterministic IPv4 CIDR and subnet mask calculator. Computes the network address, first and last usable host, broadcast address, total host count, wildcard mask, and binary representation.

SourceLocal Bitwise Math

IP Address

Prefix / Mask (/0 - /32)

Common:

Subnet Range: 192.168.1.0/24

CIDR Notation

192.168.1.0/24

Network Address

192.168.1.0

Usable Host Range

192.168.1.1 — 192.168.1.254

Broadcast Address

192.168.1.255

Subnet Netmask

255.255.255.0

Wildcard Mask

0.0.0.255

Usable Hosts

254

Total Addresses

256

Address Type

RFC 1918 Private (192.168.0.0/16)

Class

Class C

Netmask (Binary)

11111111.11111111.11111111.00000000

IP (Binary)

11000000.10101000.00000001.00110010