# IP Subnet Calculator

> Professional tool to calculate network range, broadcast address, and usable host capacity.

Page: https://askcalculators.com/calculator/ip-subnet-calculator/
Definition: https://askcalculators.com/calculator/ip-subnet-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/ip-subnet-calculator/schema.json
Version: 7.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/ip-subnet-calculator/?ip=192.168.1.1&mask=24

## Inputs
- ip: IP Address; type=text; optional; default=192.168.1.1
- mask: Prefix (/); type=number; optional; default=24

## Outputs
- result: Result; format=text; primary

## Formula
Subnet mask and network ranges are derived by bitwise AND/OR operations on the IPv4 address and CIDR prefix.

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.