IP Subnet

Calculate IPv4 CIDR ranges, masks, and usable host counts locally.

About this tool

IP Subnet Calculator — keep data local, tools out and work on

Calculate IPv4 CIDR network ranges, masks, and usable host counts locally. Kitland processes all data locally on your device with no account, no uploads, and zero payload telemetry.

How to use it

  1. Paste or type a value in the input editor.
  2. Choose the available format or direction options when the tool offers them.
  3. Review the derived result, then copy it when it is ready.

Useful for

  • Quickly inspect or transform developer text without opening a project.
  • Keep configuration, snippets, and notes in the browser while working locally.
  • Validate a result before moving it into another editor or terminal.

Frequently asked questions

Does Kitland upload my input?

No. These transformations run locally on your device. Avoid sharing screenshots or copied results that contain secrets.

What happens when the input is invalid?

The tool keeps the input visible and reports a typed validation message instead of producing a misleading result.