Self-hosting is free forever — clone the repo, deploy it yourself, no fees, no limits from us. The hosted cloud (mydevtools.tech) is a paid service.

What is the difference between self-hosting and MyDevTools Cloud?

Self-hosting is the same codebase running on your own infrastructure — you own the data and pay nothing to us. MyDevTools Cloud is our managed service; it is a paid subscription that covers hosting, sync, and backups.

Sensitive data is encrypted in your browser before it reaches the server where supported. The server stores encrypted blobs for vault-style data instead of readable plaintext.

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.

Is this truly open source?

Yes. Full source code is available on GitHub under the GPL-3.0 license. You can audit, contribute, fork, or self-host it.

Does it work offline?

Many tools are fully client-side and can work without server processing. Tools that connect to external services, sync data, or send API requests need a network connection.

Does IP / Subnet Calculator store or upload my data?

IP / Subnet Calculator is designed for browser-based use. Many MyDevTools utilities process data locally; 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?

No installation required. IP / Subnet Calculator runs directly in your web browser — just open the link and start using it.

Network & API

Free IP / Subnet Calculator OnlineIP / 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. Answers "subnet calculator online" or "CIDR to IP range".

Use IP / Subnet Calculator Browse All Tools

About IP / Subnet Calculator

Compute IPv4 and IPv6 CIDR details: netmask, wildcard, broadcast, first and last host, and subnet size. Runs locally in your browser. Runs entirely in your browser — no installation, no account required to try it.

Common IP / Subnet Calculator use cases

Use IP / Subnet Calculator when you need a fast, browser-based way to work with subnet calculator. It is useful during API debugging, code reviews, documentation cleanup, test data preparation, and quick checks on a new machine where you do not want to install a desktop app. Because MyDevTools keeps related utilities together, 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 for quick browser-based developer tasks.
IP / Subnet Calculator supports cidr calculator workflows for quick browser-based developer tasks.
IP / Subnet Calculator supports ip calculator workflows for quick browser-based developer tasks.
IP / Subnet Calculator supports netmask workflows for quick browser-based developer tasks.
IP / Subnet Calculator supports ipv6 subnet workflows for quick browser-based developer tasks.
IP / Subnet Calculator supports network calculator workflows for quick browser-based developer tasks.
IP / Subnet Calculator supports ip range workflows for quick browser-based developer tasks.
Runs in your browser — no install
Free to use, always

IP / Subnet Calculator FAQ

Is IP / Subnet Calculator free to use?

Yes. IP / Subnet Calculator is available through MyDevTools with a public landing page and browser-based app experience.

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

No. IP / Subnet Calculator runs in a web browser, so you can open it from any modern device without installing a desktop utility.

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. Answers "subnet calculator online" or "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
Click "Use IP / Subnet Calculator Free" above — no download or account required.
02
Enter your data
Paste or type your input directly in the browser. 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.

Open IP / Subnet Calculator

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