IP Range Calculator
Quick Answer
It takes an IP address and CIDR prefix and computes the network address, broadcast address, usable host range, and total number of hosts.
What Is IP Range Calculator?
IP Range Calculator is a free online network tools tool that calculate the ip range start and end from any cidr notation. An IP range calculator takes an IPv4 address and a CIDR prefix length (or subnet mask) and computes the network address, broadcast address, usable host range, total number of hosts, and subnet mask for that block. For example, 192.168.1.0/24 gives 256 total addresses, with 254 usable hosts (192.168.1.1–192.168.1.254), a network address of 192.168.1.0, and a broadcast address of 192.168.1.255. The tool also shows the binary representation for educational purposes. This is essential for network engineers planning subnets, configuring VLANs, or troubleshooting routing. All calculation is done locally. Unlike many similar tools, it runs entirely in your browser — no data is sent to any server, no account is required, and there are no usage limits. Whether you are a developer, writer, SEO professional, or casual user, this tool provides instant, accurate results without friction.
How to Use IP Range Calculator
Enter an IPv4 address and a CIDR prefix (e.g. 192.168.1.0/24) or select a subnet mask from the dropdown. The network breakdown appears instantly.
Key Features
- Network address, broadcast address, usable range
- Total hosts count
- Binary octet display
- Fully client-side
Common Use Cases
- Planning subnet allocation for a corporate network
- Verifying that two IPs are in the same subnet
- Learning how CIDR notation maps to subnet masks
Common Mistakes to Avoid
- Confusing the network address (first) with the broadcast address (last)
- Forgetting that the first and last addresses are reserved (not usable for hosts)
- Using a /31 subnet for point-to-point links — two usable addresses are possible in RFC 3021
Related Topics & Entities
- CIDR
- Subnet mask
- Network address
- Broadcast address
- IPv4
Common Questions About IP Range Calculator
Related Tools & Resources
- Subnet Calculator
- IP Validator
- Binary IP Converter
Best Practices for IP Range Calculator
To get the most out of IP Range Calculator, follow these best practices. Ensure your input data is clean and properly formatted for the most accurate results. Use the copy function to transfer output directly to your clipboard. Bookmark the tool for easy access. Check the related tools section below for complementary utilities that can enhance your workflow. Remember that all processing is client-side, so your data never leaves your browser.
More Network & IP Tools
IP Range Calculator is part of the Network & IP Tools topic. Explore related tools in this cluster:
Related Topics
Privacy & Security
IP Range Calculator processes all data entirely within your browser using JavaScript. No text, files, or personal information is transmitted to any server. Your data stays on your device, making this tool safe for sensitive content. We do not track usage, store inputs, or share data with third parties. The tool works offline after the initial page load and requires no account to use.
Frequently Asked Questions
Find answers to common questions about this tool.