Yes, while we are getting started — the first 250 signups get lifetime Pro for free. After that, plans are $59/year or $100 lifetime, no card required to try.

What is the difference between the Free and Pro plans?

The Free plan gives you the core developer tools at no cost. Pro adds unlimited usage, private history, saved snippets, and priority support — all still fully offline on your device.

Your data stays on your device — there is no cloud sync. Vault-style data is additionally encrypted locally with a password only you know.

Do I need an account to use the tools?

Google Sign-In is required to save your data across sessions. Many public tool pages can be explored before opening the full app experience.

Does it work offline?

Yes. MyDevTools is a desktop app — most tools run fully offline on your machine. Tools that connect to external services or send API requests need a network connection.

Does IP / Subnet Calculator store or upload my data?

IP / Subnet Calculator runs in the MyDevTools desktop app. Many utilities process data locally on your device; tools that require sync or external connections may send only the data needed for that workflow.

Do I need to install anything to use IP / Subnet Calculator?

Install MyDevTools once, then IP / Subnet Calculator and 80+ other tools are available offline on your desktop.

Network & API

Free IP / Subnet Calculator — MyDevToolsIP / Subnet Calculator on MyDevTools

Enter an IP/CIDR (e.g. 192.168.1.0/24) to get netmask, wildcard, broadcast, first/last host, and total hosts. IPv4 and IPv6 — a subnet calculator with CIDR to IP range.

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About IP / Subnet Calculator

Compute IPv4 and IPv6 CIDR details: netmask, wildcard, broadcast, first and last host, and subnet size. Runs locally on your device. Part of MyDevTools — an all-in-one desktop toolkit that runs offline and processes your data locally on your machine.

Common IP / Subnet Calculator use cases

Use IP / Subnet Calculator when you need a fast, dedicated way to work with subnet calculator. It is useful during API debugging, code reviews, documentation cleanup, test data preparation, and quick checks. Because MyDevTools keeps related utilities together in one offline desktop app, you can move from IP / Subnet Calculator into nearby tools like formatters, converters, generators, encoders, decoders, and API helpers without leaving the same toolkit.

Example workflow

A typical workflow starts by pasting or typing your input into IP / Subnet Calculator. Review the result, copy the cleaned or generated output, then continue with a related task such as validating a payload, decoding a token, parsing a URL, generating an identifier, or testing an API request. This makes IP / Subnet Calculator part of a practical developer workflow instead of a one-off utility page.

Key Features

IP / Subnet Calculator supports subnet calculator workflows in one all-in-one desktop toolkit.
IP / Subnet Calculator supports cidr calculator workflows in one all-in-one desktop toolkit.
IP / Subnet Calculator supports ip calculator workflows in one all-in-one desktop toolkit.
IP / Subnet Calculator supports netmask workflows in one all-in-one desktop toolkit.
IP / Subnet Calculator supports ipv6 subnet workflows in one all-in-one desktop toolkit.
IP / Subnet Calculator supports network calculator workflows in one all-in-one desktop toolkit.
IP / Subnet Calculator supports ip range workflows in one all-in-one desktop toolkit.
Runs offline on your desktop
Free to use, always

IP / Subnet Calculator FAQ

Is IP / Subnet Calculator free to use?

Yes. IP / Subnet Calculator is part of MyDevTools, the all-in-one developer desktop app, and is free to use.

Do I need to install anything for IP / Subnet Calculator?

IP / Subnet Calculator is one of 80+ tools in the MyDevTools desktop app. Install MyDevTools once and every tool works offline, with your data processed locally.

What is IP / Subnet Calculator best for?

Enter an IP/CIDR (e.g. 192.168.1.0/24) to get netmask, wildcard, broadcast, first/last host, and total hosts. IPv4 and IPv6 — a subnet calculator with CIDR to IP range.

What should I use with IP / Subnet Calculator?

Most developers pair IP / Subnet Calculator with related MyDevTools utilities such as formatters, parsers, encoders, generators, API tools, and security helpers.

How to Use IP / Subnet Calculator

01
Open the tool
Open IP / Subnet Calculator in the MyDevTools desktop app — no account required to start.
02
Enter your data
Paste or type your input directly. Processing happens locally on your device.
03
Copy the result
Get your output instantly. Copy it, download it, or keep working in the same tab.

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Learn

IP Subnet Calculator: CIDR Notation, Subnet Masks, and Network Ranges Explained

Learn how IP subnetting works, how to read CIDR notation, calculate usable host ranges, and why subnetting matters for VPC design, firewalls, and network architecture.

7 min read•Network & API

Read Article

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