Turn Excel Into Clean JSON. Nested. Typed. Offline.
Excel2JSON converts Excel and CSV files to developer-ready JSON on your own PC. Headers like customer.name become nested objects, not another flat dump. Nothing is uploaded.
- Nested objects and arrays, straight from your headers
- Objects, NDJSON, arrays, cell map, CSV: 7 output formats
- Your files never leave your PC
10 free conversions, everything unlocked. No credit card, no sign-up. Windows 10 & 11.
![Excel2JSON on Windows: an orders sheet with customer.name and items[0] headers on the left, the live nested JSON preview on the right](https://pythonandvba.com/images/pages/excel2json/hero-main-v1.webp)
Your headers describe the structure. Excel2JSON builds it.
Every free converter dumps flat rows and leaves the real work to you. Put dots and brackets in your headers, and Excel2JSON emits the JSON your code actually wants.
| id | customer.name | customer.city | tags[0] | tags[1] | active |
|---|---|---|---|---|---|
| A-101 | Alpenglow GmbH | Köln | retail | eu | TRUE |
| A-102 | Cobalt Retail | Wien | b2b | FALSE |
[
{
"id": "A-101",
"customer": {
"name": "Alpenglow GmbH",
"city": "Köln"
},
"tags": ["retail", "eu"],
"active": true
},
…
]
Convert on your PC, not on someone's server
Web converters want your workbook uploaded first, and then hand back flat rows with the types guessed wrong. Excel2JSON does the whole job on your own computer.
- Your workbook goes to a server you do not control
- Flat rows only: nesting is your problem
- Types guessed wrong: ID 007 becomes the number 7
- One small file at a time, first sheet only
- Copy, paste, repeat, for every single export
- Everything happens on your PC, offline
- Nested objects and arrays from dot and bracket headers
- Per-column types: 007 stays "007", TRUE becomes true
- Any file size, every sheet, or just the range you select
- NDJSON for pipelines, camelCase keys for your API
What you need
In and out
Every common spreadsheet format in, developer-ready data out. Or skip files entirely and paste copied cells from any spreadsheet app, Google Sheets included.
- XLSX
- XLSM
- XLSB
- XLS
- ODS
- CSV
- TSV
- TXT
- Pasted cells
Multi-sheet workbooks, semicolon CSVs, UTF-16, cached formula results: all handled.
- JSON objects
- Nested JSON
- NDJSON
- Arrays
- Headers+rows
- Cell map
- CSV
- TSV
Pretty or compact, copied to the clipboard or saved as a file.
- customer.name
- tags[0]
- camelCase
- snake_case
- Text
- Number
- Boolean
- Date
Nesting from headers, key transforms, and per-column type control.
What you can do
Your files never leave your PC
Most converters are websites: you upload the payroll workbook and hope. Excel2JSON is a program on your computer. There is no upload, because there is no server.
-
Nothing is uploadedEvery conversion runs on your computer. Not even I can see your files.
-
No account, no trackingInstall it and use it. The free conversions need no sign-up, and the free tier makes no network requests at all.
-
Works with the cable pulledConvert offline if you like. The app only goes online to validate a license key, and that request never contains your data.
What people convert for
JSON is the format your code, your API and your tools speak. The data, though, keeps arriving as spreadsheets. Excel2JSON is the bridge, without a script and without an upload.
Honest feedback from real users
Responsive and open to feedback
“Impressed with both the products and the support. Very responsive to questions and open to improvement suggestions. I've purchased several tools and been happy with all of them.”
John
See reviewFantastic support
“Had a question and got a helpful reply within hours. Really solid support. Highly recommend.”
Gary S.
See reviewAn awesome program and creator
“Not only does the developer respond directly to your questions, he actually acts on them. I made a feature request and it was implemented the next day. That kind of dedication is rare.”
Rob
See reviewPay once, use it forever
Try it free on your own files. When you want more, one payment unlocks unlimited conversions. No subscription, ever.
- 10 conversions, everything unlocked
- Nested mode, NDJSON, types, key transforms
- All formats, any file size
- No account, no sign-up
- Updates through the Store
- Unlimited conversions
- Nested mode, NDJSON, types, key transforms
- All formats, any file size
- 1 user, up to 3 PCs
- All future updates, priority support
- Unlimited conversions
- Nested mode, NDJSON, types, key transforms
- All formats, any file size
- Up to 15 users
- All future updates, priority support
14-day refund, no questions asked. If it is not for you, email me and you get your money back.
Frequently asked questions
Still have a question?
I’m Sven, the developer, and I usually reply within a day.
Get clean JSON in a minute
Nothing to configure. Drop a file, select a range, copy JSON. 10 conversions on the house.
Try Excel2JSON for freeExcel2JSON is an independent product by Bosau Digital LLC. It is not affiliated with or endorsed by Microsoft. Microsoft, Windows and Excel are trademarks of the Microsoft group of companies.
Excel2JSON is a Windows app
The Microsoft Store opens next, but the app installs on a Windows 10 or 11 PC, not on a phone. Have a read here, then grab it on your PC. Need one file converted right now? The free online converter works on your phone.
