Subnet Calculator

IPv4 CIDR network, mask, broadcast and host range.

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How it works

Enter your input.
Get the result instantly.
Copy or download it.

Runs in your browser. Your data never leaves your device.

Frequently asked questions

Is Subnet Calculator free?

Yes. You can use Subnet Calculator for free without installing anything. A free account gives you higher daily limits, and paid plans remove most limits.

Is it safe to use?

Yes. Subnet Calculator runs completely in your browser, so your data never leaves your device.

Do I need to install any software?

No. Subnet Calculator works in any modern web browser on Windows, Mac, Linux, Android and iPhone.

Does it work on mobile phones?

Yes. The page adapts to any screen size, so you can use it on your phone or tablet just like on a computer.

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