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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 CSV / Excel ↔ JSON Converter store or upload my data?

CSV / Excel ↔ JSON Converter 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 CSV / Excel ↔ JSON Converter?

No installation required. CSV / Excel ↔ JSON Converter runs directly in your web browser — just open the link and start using it.

Converters

Free Spreadsheet Converter OnlineCSV / Excel ↔ JSON Converter on MyDevTools

Convert CSV or Excel (.xlsx) files to JSON, or export JSON arrays back to CSV/Excel. Dates from Excel convert to ISO strings. Answers "CSV to JSON converter online", "Excel to JSON", or "JSON to CSV download".

Use CSV / Excel ↔ JSON Converter Browse All Tools

About CSV / Excel ↔ JSON Converter

Upload CSV or Excel files and convert to JSON, or export a JSON array of objects back to CSV and XLSX. Dates from Excel become ISO strings. Runs in your browser. Runs entirely in your browser — no installation, no account required to try it.

Common CSV / Excel ↔ JSON Converter use cases

Use CSV / Excel ↔ JSON Converter when you need a fast, browser-based way to work with csv to json. 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 CSV / Excel ↔ JSON Converter 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 CSV / Excel ↔ JSON Converter. 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 CSV / Excel ↔ JSON Converter part of a practical developer workflow instead of a one-off utility page.

Key Features

CSV / Excel ↔ JSON Converter supports csv to json workflows for quick browser-based developer tasks.
CSV / Excel ↔ JSON Converter supports excel to json workflows for quick browser-based developer tasks.
CSV / Excel ↔ JSON Converter supports xlsx to json workflows for quick browser-based developer tasks.
CSV / Excel ↔ JSON Converter supports json to csv workflows for quick browser-based developer tasks.
CSV / Excel ↔ JSON Converter supports json to excel workflows for quick browser-based developer tasks.
CSV / Excel ↔ JSON Converter supports spreadsheet converter workflows for quick browser-based developer tasks.
CSV / Excel ↔ JSON Converter supports tabular data workflows for quick browser-based developer tasks.
Runs in your browser — no install
Free to use, always

CSV / Excel ↔ JSON Converter FAQ

Is CSV / Excel ↔ JSON Converter free to use?

Yes. CSV / Excel ↔ JSON Converter is available through MyDevTools with a public landing page and browser-based app experience.

Do I need to install anything for CSV / Excel ↔ JSON Converter?

No. CSV / Excel ↔ JSON Converter runs in a web browser, so you can open it from any modern device without installing a desktop utility.

What is CSV / Excel ↔ JSON Converter best for?

What should I use with CSV / Excel ↔ JSON Converter?

Most developers pair CSV / Excel ↔ JSON Converter with related MyDevTools utilities such as formatters, parsers, encoders, generators, API tools, and security helpers.

How to Use CSV / Excel ↔ JSON Converter

01
Open the tool
Click "Use CSV / Excel ↔ JSON Converter 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 CSV / Excel ↔ JSON Converter

Related Converters Tools

URL Encoder / DecoderPercent-encode or decode text for query strings and URI components with UTF-8 support.URL ParserParse any URL into protocol, host, path, query parameters, and hash. Runs locally in your browser.Timestamp ConverterConvert Unix seconds or milliseconds, ISO-8601, and date strings. See UTC, local, and relative time with one-click copy.Base64 Encoder / DecoderEncode text to Base64 or decode Base64 strings instantly, with UTF-8 support. Runs entirely in your browser.Number Base ConverterConvert integers between number bases 2 through 36 with optional 0x/0b/0o prefixes. Runs entirely in your browser.Image to Base64 ConverterConvert images to Data URI or raw Base64 strings instantly. Drops local images and encodes them purely in the browser.Unit ConverterConvert between 323 units across 43 scientific and engineering categories including length, mass, pressure, viscosity, thermal, electrical, polymer, and materials science units.

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