IP Subnet Calculator

by Michał Sibilski · Tools

Manifest V3 Free

View in Chrome Web Store Data as of 20 Oct 2026

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

Users

+4 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#114K

#95K among extensions

Version

1.1

updated 14 Nov 2025

Users

monthly, 11 months

Latest, 20 Oct 2026: 45 usersMove the mouse over the chart for any month

Ratings count

monthly, 11 months

Latest, 20 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About IP Subnet Calculator

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 !