How do I convert ODS to JSON?

Add your ODS file to the upload area above, then press Convert. The JSON file downloads straight to your device. You do not need an account, and there is no watermark.

Are my files uploaded to a server?

No. This conversion runs entirely inside your browser using WebAssembly, so the file never leaves your device — you can even disconnect from the internet after the page loads and it will still work.

Does converting to JSON reduce quality?

Nothing is re-encoded — the content is taken out of the ODS container as-is, so its quality is unchanged.

How large a file can I convert?

Up to 100 MB per file for this conversion. Because the work happens in your browser, the practical limit is your device's memory — larger files work on a desktop with plenty of RAM and may fail on an older phone.

Can I convert several files at once?

Yes. Add as many as you like and press Convert All. Each file is processed independently, so one failure does not stop the rest, and you can download everything together as a ZIP.

Can I use this on my phone?

Yes. FileTools360 works in mobile browsers on iOS and Android, including choosing files straight from your camera roll. Very large videos may run out of memory on a phone — those are better converted on a laptop.

SpreadsheetExtracted as-isRuns in your browser

ODS to JSON Converter

Turn ODS files into JSON in a couple of clicks. The open standard spreadsheet format. The default data interchange format for APIs. Content is pulled out of the source container rather than re-authored.

On your deviceNever uploadedGone when you close the tabHow this works

Drop your files here

ODS files (.ods) · up to 100 MB each

or paste files from your clipboard

Ready when you are

Drop a ODS file above and FileTools360 will turn it into JSON — right here on your device, without uploading anything.

⌘K to search converters

How to use it

1
Add your ODS files
Drag them onto the upload area, choose them from your device, or paste them from your clipboard. You can queue several at once.
2
Adjust the settings if you want to
The defaults suit most people. Open Advanced to control delimiter and header handling and indentation and element names.
3
Convert and download
Press Convert. Everything happens on your own device — nothing is uploaded. Download files one by one, or grab them all as a ZIP.

ODS and JSON explained

ODS is the OpenDocument spreadsheet format, the open-standard counterpart to XLSX used by LibreOffice Calc.

JSON represents structured data as nested objects and arrays. It came from JavaScript but is now the default interchange format for essentially every web API.

Where ODS files come from: LibreOffice Calc and open-standards environments.
Where JSON is used: APIs, configuration files and application data exports.

ODS vs JSON

The two formats solve different problems, which is why converting between them involves trade-offs rather than a straight upgrade.

ODS compared with JSON
Property	Source	Target
Compression	Lossless	None
Introduced	2005	2001
Browser support	LibreOffice natively, Excel with basic fidelity.	Every modern language and tool.

ODS is stronger at: Open ISO standard. Formulas, formatting and multiple sheets. Default in LibreOffice.
JSON is stronger at: Native support in every modern language. Handles arbitrary nesting. Distinguishes strings, numbers, booleans and null.

Why convert ODS to JSON?

People make this switch when they run into the limits of ODS: sharing complex workbooks with Excel users. JSON is the better fit when APIs, configuration and any data with structure beyond a flat table.

ODS limitations that prompt the switch: Excel support is imperfect, particularly for complex formulas. Less common in business.
What you give up: No comments allowed. Verbose for large tabular datasets.

What is preserved when converting ODS to JSON?

Both formats store the content without discarding data, so this conversion preserves it exactly. The file size may change because the two formats compress differently, but the content itself is unaffected.