# IP Subnet Calculator

> Fast IP Subnet Calculator - Calculates network, broadcast, host range, mask and more. Works for IPv4.

Canonical page: [https://chrome-stats.com/d/ip-subnet-calculator](https://chrome-stats.com/d/ip-subnet-calculator)

## Overview

- **ID:** `ip-subnet-calculator`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Michał Sibilski
- **Category:** web-development
- **Daily users:** 4
- **Version:** 1.2
- **Last updated:** 2025-11-16
- **First published:** 2025-11-13
- **Size:** 26 KB
- **Data as of:** 2026-09-05
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/ip-subnet-calculator/)

## Description

Enter the IP address and mask in CIDR (/24) or decimal (255.255.255.0) format, and that's it!
You'll get information back about the network address, wildcard mask, broadcast, first and last host, and the number of usable IP addresses. It even understands the /31 mask. This will shorten your IP address counting pain. Good luck, Network Admin !

## Rankings

- #50,286 — Overall
- #74 — calculator
- #75 — calculus
- #95 — ip
- #165 — submit

## Permissions and access

### Permissions

- `storage`

## Safety

- **Risk impact:** Very low risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [IP Calculator](https://chrome-stats.com/d/ip-calc) — 1 users
- [CIDR Calculator](https://chrome-stats.com/d/cidr-calculator)
- [IP Subnet](https://chrome-stats.com/d/ip-subnet) — 6 users
- [Simple IP Calculator](https://chrome-stats.com/d/simple-ip-calculator) — 15 users, 4.00 / 5
- [Subnet Calc](https://chrome-stats.com/d/subnet-calc) — 6 users
- [SubNet Calc](https://chrome-stats.com/d/subnet_calc) — 1 users
- [SubNet Calc for Android](https://chrome-stats.com/d/subnet_calc_android) — 1 users
- [CIDR Utils](https://chrome-stats.com/d/cidr-utils) — 1 users
- [SubNet Classer](https://chrome-stats.com/d/subnet_classer)
- [Ip Calculator](https://chrome-stats.com/d/ip-calculator) — 1 users
- [Flex Subnetting](https://chrome-stats.com/d/flex-subnetting) — 3 users
- [ipsToNetwork](https://chrome-stats.com/d/ipstonetwork)

---

Source: [Chrome-Stats](https://chrome-stats.com/d/ip-subnet-calculator)