Subnet Calculator
Calculate IPv4 subnets with network, broadcast, usable host range, wildcard mask, and CIDR sliders for planning LANs and cloud VPCs accurately offline.
Prefix length: /24
Subnet details
| IP Address | 192.168.1.10 /24 |
|---|---|
| Network | 192.168.1.0 |
| Broadcast | 192.168.1.255 |
| Subnet Mask | 255.255.255.0 (11111111.11111111.11111111.00000000) |
| Wildcard Mask | 0.0.0.255 |
| First Usable | 192.168.1.1 |
| Last Usable | 192.168.1.254 |
| Usable Hosts | 254 |
| Total Addresses | 256 |
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About the author
Written and maintained by the Tool4SaaS team. Every tool runs locally in your browser and is tested in-house for accuracy. Last updated: .
Frequently asked questions
Mask, network, broadcast, first/last host and host count via bitwise math.
Yes, bitwise and octal math run locally in the browser; your inputs never leave the device.
Yes, it is free, works offline in your browser, and your data never leaves your device.
How to use Subnet Calculator
- Enter IP: Type IP like 192.168.1.0.
- Set CIDR: Choose prefix 0-32.
- View: See network table.