Hi! I'm the Facilita assistant. I can generate, validate and format CPF/CNPJ, help with passwords, JSON, conversions, calculators, and answer questions about our tools. How can I help?
IP Subnet
IP Subnet: Calculate ip and subnet with speed and clarity. Runs straight in the browser and keeps the workflow lightweight. Built for quick checks before you.
No sign-up
·
100% free
·
Private
Subnet Input
Subnet Network Address
Subnet Broadcast
Subnet Mask
Subnet Wildcard
Subnet Host Range
Subnet Total Hosts
Subnet Usable Hosts
Subnet Ip Class
Subnet Binary
Subnet Ip Type
CIDR
Subnet Cidr Ref
| CIDR | Subnet Mask | Subnet Total Hosts | Subnet Usable Hosts |
|---|
Was this tool helpful?
Thank you for your feedback!
Why use IP Subnet
People searching for quick answers often land here because IP Subnet matches common searches such as IP Subnet, online ip and subnet and a practical way to handle ip The focus is to turn inputs into a clear calculation, showing the result in a way that is easy to review before you act on it.
Use IP Subnet when you need to simulate or calculate without hiding the logic without opening spreadsheets, heavy editors or back-and-forth forms. Useful whenever the main job is to solve one narrow problem quickly and move on. The page is structured to answer the practical question first, then give enough context to review the result with confidence. That matters when the result will be used to compare scenarios or explain a decision.
Where this tool is most useful
- Transparent calculation for a practical way to handle IP Subnet Calculator
- Clear output that is easier to review and trust for day-to-day operational work
- Local-first handling for Works well in short operational workflows
For client-side tools, the page highlights local execution and practical steps so the result feels trustworthy before you move on. If this step is only part of your workflow, nearby tools like CHMOD Calculator, Regex Tester and Cron Generator help you continue without redoing context from scratch.
IP Subnet Calculator
The IP Subnet Calculator is a free online tool for network engineers and IT professionals that computes subnet details from an IP address and subnet mask (or CIDR notation). Enter an IPv4 address with its subnet mask (e.g., 192.168.1.0/24) and the tool instantly shows the network address, broadcast address, usable host range, total number of hosts, wildcard mask, and the binary representation of the subnet mask. This is essential for network design, troubleshooting, and IP address planning.The calculator supports both CIDR notation (/8, /16, /24, /27, etc.) and dotted decimal notation (255.255.255.0, 255.255.255.224, etc.) for maximum flexibility. It handles all standard subnet masks from /1 to /32 and correctly identifies the network class (A, B, C) for classful network reference. The tool also includes a VLSM (Variable Length Subnet Masking) mode that lets you subdivide a network into multiple subnets of different sizes to optimize IP address utilization.Network administrators plan IP address allocation across departments and VLANs. System administrators determine the correct subnet for server placement. Security engineers calculate firewall rules and ACL boundaries. Cloud architects design VPC subnets in AWS, Azure, and GCP. CCNA students practice subnetting exercises and verify their manual calculations. Help desk technicians troubleshoot connectivity issues by identifying subnet mismatches. The visual binary representation helps users understand exactly how the mask separates the network and host portions.IP Subnet Calculator is part of the facilita.tools network toolkit. Available in Portuguese, English, and Spanish, optimized for desktop and mobile.
Frequently Asked Questions
What does IP Subnet do?
IP Subnet helps you calculate ip and subnet with a short, direct workflow. It is meant for people who need an answer quickly without losing the context behind the result.
When should I use IP Subnet?
Use IP Subnet when the priority is speed, repeatability and fewer manual steps. It works well for quick checks, operational routines and situations where you do not want to open a full application for a small task.
Does IP Subnet keep my data private?
For client-side tools, the main processing happens in the browser. That reduces friction for sensitive or temporary inputs and makes the page useful for quick private checks.
How is IP Subnet different from nearby tools?
IP Subnet focuses on one narrow job so the page stays fast and easier to trust. If your workflow continues after this step, CHMOD Calculator is the kind of related tool you would use next.
What is subnetting?
Subnetting divides a large network into smaller, more manageable sub-networks (subnets). It improves network performance, security, and IP address management by creating logical groupings of devices.
What does CIDR /24 mean?
CIDR /24 means the first 24 bits of the IP address are the network portion, leaving 8 bits for hosts. This equals subnet mask 255.255.255.0 and provides 254 usable host addresses (256 total minus network and broadcast).
How many usable IPs are in a /24 subnet?
A /24 subnet has 254 usable IP addresses. The total is 256 (2^8), but 2 are reserved: the network address (first IP) and broadcast address (last IP). For a /23, you get 510 usable IPs.