KingFisher Labs

From KingFisher Labs

IP Calc

Type an address, drag the prefix, and read every number that matters—networks, masks, hosts, and cloud reserved ranges—instantly and entirely offline.

Coming soon

IP Calc app icon showing a subnet address on a calculator display

How it works

Every answer, before you ask.

Type an address and drag the prefix: network, broadcast, mask, wildcard, usable range, and host count update as you move. The address space itself is the instrument—drag it to resize a block, swipe to walk to the neighboring subnet.

Planning for the cloud? Switch the profile and IP Calc carves out the addresses AWS, Azure, or GCP reserve, so the usable count you read is the one you actually get.

VLSM planning, subnet comparison, an IP converter, and saved subnets round out the toolbox. Everything runs on the phone: no account, no network, no waiting.