Subnet Calculator
Calculate network address, broadcast, usable hosts and mask from IP and CIDR prefix.
Instructions
How to Use\n1. Enter an IP address\n2. Enter a CIDR prefix (e.g. 24)\n3. Network address, broadcast address and usable host range are calculated automatically
FAQ
Does it support IPv6?
Currently IPv4 is supported; IPv6 will come later.
What is CIDR?
For example, 192.168.1.0/24 means the network prefix length is 24 bits.
Related Articles
HTTP Status Code Lookup Not Working and Page Won't Open: How to Fix
This guide follows the troubleshooting order of "switch networks, disable extensions, complete the protocol, change browsers" to explain the causes and solutions when an HTTP status code lookup doesn't work. It also explains the difference between it and developer tools, beginner methods, key points for mobile use, and how to use it together with API debugging, helping you pinpoint the problem and get status code results within a few minutes.
tool-tutorialsWhat to Do When the Email Validator Doesn't Work? Common Error Causes and Troubleshooting Ideas
This article helps you determine whether an email validator running locally in the browser is truly safe, explains its checking capabilities and boundaries, and provides troubleshooting steps when it doesn't work, batch processing methods for large files, and usage in API debugging scenarios, so you get verifiable criteria for judgment rather than just a slogan.
tool-tutorialsHow to Choose an Online Image Compression Tool with No Installation
This guide helps you determine whether an online image compression tool truly runs locally without installation, master how to handle common problems such as blurriness after compression and size that won't come down, and distinguish the boundary between compression and format conversion, so even beginners can reduce image size while preserving image quality.
tool-tutorialsDifference Between JS Formatting, Minification, and Online Beautification Tools: Which to Choose
This article helps you clearly distinguish the differences between JS formatting, minification, and beautification tools in one go, master the correct usage scenarios and step-by-step operations for formatting, minification, and beautification, and provides specific methods for troubleshooting errors, mitigating large file lag, and handling mobile use without installation, so you can choose the right tool according to your purpose and avoid wasted effort.