Calculadora de sub-rede

What Is a Subnet Calculator?

A subnet calculator takes an IP address and CIDR prefix length (or subnet mask) and computes all derived network properties: network address, broadcast address, usable host range, number of hosts, and wildcard mask.

Subnetting is a core skill in network engineering and administration. Manually computing subnet boundaries is error-prone and slow; a calculator ensures correctness when designing or troubleshooting network address assignments.

How to Calculate Subnets

1. Enter IP address and subnet mask or CIDR notation
2. The calculator determines network boundaries
3. View usable host range and network information
4. Get subnet details for network planning

Features

• Calculate network address and broadcast address
• Determine usable IP range for hosts
• Support both decimal and CIDR notation
• Show subnet masks and network sizing

Common Use Cases

• Designing IP address schemes for a new network or VLAN configuration
• Verifying subnet boundaries during network troubleshooting
• Studying for CCNA and other networking certifications that test subnetting

Why Use ToolPop Subnet Calculator

• Computes all subnet properties — network, broadcast, host range, wildcard — in one step
• Accepts CIDR notation (/24) or dotted-decimal subnet mask format
• Displays subnet details in binary alongside decimal for learning and verification

ToolPop vs ipcalc Command-Line Tools

ipcalc and sipcalc require terminal access and are unavailable on Windows without installation. ToolPop delivers the same subnet decomposition in the browser, accessible from any device during on-site network work or classroom study.

Tips

• Subnetting allows efficient IP address allocation
• First IP is network address; last is broadcast address
• Essential for network administration and infrastructure planning

Frequently Asked Questions

What does CIDR notation mean?

CIDR (/24, /25, etc.) represents the number of bits in the subnet mask. /24 means first 24 bits are network, last 8 bits for hosts.

How many usable IPs are in a subnet?

Total IPs minus 2 (network and broadcast addresses). A /24 subnet has 256 total IPs but only 254 usable for hosts.

Will my network information be stored?

No, all subnet calculations happen in your browser. Your network information is never stored or transmitted.