CIDR / Subnet Calculator
Calculate IP address ranges, subnet masks, and network information for CIDR notation and subnets.
About This Tool
Our CIDR / Subnet Calculator helps network engineers and DevOps professionals calculate IP address ranges, subnet masks, network addresses, broadcast addresses, and host ranges. Whether you're planning network infrastructure, configuring cloud services, or managing IP allocations, this tool makes subnet calculations quick and accurate.
When and Why to Use CIDR / Subnet Calculator
CIDR / Subnet Calculator is designed to solve common day‑to‑day problems developers face while working on real projects. Instead of building your own one‑off scripts or relying on heavyweight desktop tools, you can open this page in your browser and get an instant, focused workflow that does one job extremely well. This is especially useful when you are switching between tasks and need a reliable utility you can quickly come back to.
A good rule of thumb is to reach for CIDR / Subnet Calculator whenever you catch yourself repeating the same manual task more than a couple of times a week. Automating these repetitive steps not only saves time but also reduces the risk of human error, which can otherwise lead to subtle bugs or inconsistencies in your application or documentation.
For best results, integrate this tool into your regular development workflow: keep it open in a browser tab alongside your code editor, use it to validate or transform data before committing changes, and share it with teammates who might benefit from a standardized way of handling the same task.
Usage Examples
- •Calculate CIDR notation ranges
- •Determine subnet masks
- •Find network and broadcast addresses
- •Calculate available host IPs
- •Plan IP address allocations
Common Use Cases
Network Engineering - Plan network infrastructure
DevOps - Configure cloud services
System Administration - Manage IP allocations
Cloud Computing - Plan VPC subnets
Security - Calculate network ranges
Frequently Asked Questions
What is CIDR notation?
CIDR (Classless Inter-Domain Routing) notation is a compact representation of IP address and routing prefix, written as IP address followed by a slash and the number of bits.
Can I calculate multiple subnets?
Yes, you can calculate subnet information for any CIDR notation or IP range.