Subnet Calculator - IP Tool
CIDR calculator for engineers.
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
The ultimate subnet calculator for network engineers! Instantly calculate IP ranges, broadcast addresses, and valid hosts with strict input validation.
"Subnet Calculator" is a simple yet powerful IP address calculation tool designed for network engineers, IT professionals, and students.
Simply enter an IP address and select the CIDR (prefix length) to instantly calculate essential network information:
Network Address
Broadcast Address
Usable IP Range
Number of Available Hosts
[Key Features]
Intuitive Interface: Fast decimal pad input and easy CIDR selection to speed up your workflow.
Strict Input Validation: Prevents configuration errors by blocking invalid formats like leading zeros (e.g., 010) that can be misread by routers as octal numbers.
One-Tap Copy: Copy the entire calculation result to your clipboard with a single tap, making it easy to paste into terminal sessions or documentation.
Cheat Sheet: Includes a quick reference list of subnet masks and host counts from /8 to /32.
Built to improve efficiency in network design, deployment, and troubleshooting. A must-have utility tool for your daily IT operations.
[Disclaimer]
While every effort has been made to ensure the accuracy of the calculation results, the developer makes no guarantees regarding its suitability for all environments. The developer shall not be held liable for any network issues, damages, or losses resulting from the use of this application. Please verify all configurations at your own risk before deploying them to actual network equipment.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Minor bug fixes and improvements.
The developer, Shota Yamada, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Shota Yamada
- Size
- 4.7 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
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- Remove Ads $2.99
- Copyright
- © 2026 Shota Yamada