SubNet Calculator

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🕐 Recent Calculations

⌨️ Network Input

⚠️

IP Address

CIDR

Subnet Mask

Common

Network / Host Bit Distribution

Network bits Host bits

Network—

Broadcast—

Mask—

CIDR—

Wildcard—

First Host—

Last Host—

Total Addr—

Usable—

Class—

Hex—

Scope—

IP—

Mask—

Network—

Broadcast—

Divide into:

#	Network	Range	Broadcast	Hosts
Select a CIDR and click "Go"

🔍 Same Subnet Check

Check if two IP addresses are on the same network.

IP Address 1

IP Address 2

Subnet Mask / CIDR

🔀 Network Overlap Check

Check if two networks overlap.

Network 1

Network 2

📊 Supernet / Summarization

Find the smallest network that covers all entered networks.

Networks (one per line, CIDR notation)

📋 CIDR Reference

CIDR	Mask	Addresses	Usable

Tap a row to set that CIDR.