Subnet Calculator
Professional IPv4 subnet calculator with CIDR notation support. Calculate network ranges, broadcast addresses, subnet masks, and host counts instantly.
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What is Subnet Calculator?
Subnet Calculator helps network administrators calculate network addresses, broadcast addresses, and the usable host IP range given an IP and subnet mask.
Key Benefits
- Network planning
- CIDR math
- Avoid overlap
- Admin tool
Common Use Cases
- •VPC setup
- •Office network
- •Certification study
- •Router config
How to Calculate Subnet
- IP: Enter IP Address.
- Mask: Enter CIDR (e.g. /24) or Mask.
- View: See Network, Broadcast, and Hosts.
Key Features
- Calculate subnet information
- Network address and broadcast
- Usable host range
- CIDR to subnet mask conversion
- VLSM subnetting
- IPv4 and IPv6 support
Frequently Asked Questions
CIDR?
Calculates based on CIDR notation (e.g. /24).
What it shows?
Network Address, Broadcast Address, and range of Usable IP Addresses.
Mask?
Converts between Subnet Mask (255.255.255.0) and CIDR (/24).
Featured in Collections:Network & DevOps Toolkit