IP Subnet Calculator

Calculate IP subnets, CIDR blocks, and plan your network infrastructure

Network Input

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Network Summary

Detailed Analysis

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Network Class
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Network Type
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Wildcard Mask
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Max Subnets

VLSM Subnet Planning

Binary Representation

IP Address (Binary):
Enter IP address to see binary representation
Subnet Mask (Binary):
Enter subnet mask to see binary representation
Network Address (Binary):
Network calculation will appear here

IP Subnetting Guide

Class A Networks
1.0.0.0 - 126.255.255.255
Default mask: /8 (255.0.0.0)
16,777,214 hosts per network
Class B Networks
128.0.0.0 - 191.255.255.255
Default mask: /16 (255.255.0.0)
65,534 hosts per network
Class C Networks
192.0.0.0 - 223.255.255.255
Default mask: /24 (255.255.255.0)
254 hosts per network
Private Networks
10.0.0.0/8
172.16.0.0/12
192.168.0.0/16

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