IP Subnet Calculator

Overview

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

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 !

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Details

Version
1.1
Updated
November 14, 2025
Flag concern
Offered by
Michał Sibilski
Size
21.34KiB
Languages
English
Developer
Email
msibilski18@gmail.com
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization

The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

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