viptool / Network Tools / IPv4 Subnet Calculator
Network Tools

IPv4 Subnet Calculator

Enter an IPv4 address and CIDR prefix from 0 through 32.

Processed locally in your browser.

How to use IPv4 Subnet Calculator

  1. Enter or select the data you want to process above.
  2. Select “Calculate subnet” to run the tool.
  3. Review the result, then copy it or adjust the input and run again.

IPv4 Subnet Calculator FAQ

Does this tool store my data?

The primary operation runs in your browser. Viptool does not upload or store the content you enter.

Why can the result differ from another website?

Results depend on the input format, calculation rules, and data update time. For live information, check the provider and timestamp shown with the result.