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

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

Install MyDevTools once, then CSV / Excel ↔ JSON Converter and 80+ other tools are available offline on your desktop.

Converters

Free Spreadsheet Converter — MyDevToolsCSV / 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 — a CSV to JSON, Excel to JSON, and JSON to CSV converter.

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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 on your device. Part of MyDevTools — an all-in-one desktop toolkit that runs offline and processes your data locally on your machine.

Common CSV / Excel ↔ JSON Converter use cases

Use CSV / Excel ↔ JSON Converter when you need a fast, dedicated way to work with csv to json. 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 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 in one all-in-one desktop toolkit.
CSV / Excel ↔ JSON Converter supports excel to json workflows in one all-in-one desktop toolkit.
CSV / Excel ↔ JSON Converter supports xlsx to json workflows in one all-in-one desktop toolkit.
CSV / Excel ↔ JSON Converter supports json to csv workflows in one all-in-one desktop toolkit.
CSV / Excel ↔ JSON Converter supports json to excel workflows in one all-in-one desktop toolkit.
CSV / Excel ↔ JSON Converter supports spreadsheet converter workflows in one all-in-one desktop toolkit.
CSV / Excel ↔ JSON Converter supports tabular data workflows in one all-in-one desktop toolkit.
Runs offline on your desktop
Free to use, always

CSV / Excel ↔ JSON Converter FAQ

Is CSV / Excel ↔ JSON Converter free to use?

Yes. CSV / Excel ↔ JSON Converter is part of MyDevTools, the all-in-one developer desktop app, and is free to use.

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

CSV / Excel ↔ JSON Converter 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 CSV / Excel ↔ JSON Converter best for?

Convert CSV or Excel (.xlsx) files to JSON, or export JSON arrays back to CSV/Excel. Dates from Excel convert to ISO strings — a CSV to JSON, Excel to JSON, and JSON to CSV converter.

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
Open CSV / Excel ↔ JSON Converter 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

Convert CSV to JSON, Excel to JSON Offline

Load CSV or Excel files and convert to JSON instantly. Export JSON arrays back to CSV or XLSX. All processing happens locally on your desktop.

5 min read•Converters

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