Ultimate IPv4 Subnet Calculator and Wildcard Calculator

This IP subnet calculator takes an IPv4 address, a netmask or CIDR and tells you the resulting IP Address, Subnet Mask, CIDR, Wildcard Mask, Network Address, Broadcast Address, First/Last Usable Host, Number of Usable Hosts, Network Class, Network Bits and Host Bits.

Use this tool to strengthen your subnetting and binary skills, as it displays results in decimal and binary formats.

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Enter the IPv4 Address with Subnet Mask or CIDR, then click "Calculate" to begin:

Results

IP Address:
Decimal:
Binary:

Subnet Mask & CIDR:
CIDR:
Decimal:
Binary:

Wildcard:
Decimal:
Binary:

Network Address:
Decimal:
Binary:

Broadcast Address:
Decimal:
Binary:

First Usable Host:

Last Usable Host:

Number of Usable Hosts:

Network Class:

Network Address Size (bits):

Host Address Size (bits):