FREE · BROWSER-BASED
CSV to JSON Converter — Convert, Preview and Download Locally
Turn spreadsheet exports into JSON for APIs, scripts, and documentation — or flatten JSON back into CSV.
Loading tool…Preparing your workspace in the browser
Runs in your browser
Processing happens on your device. Files and text you enter are not uploaded to SurrendaSoft servers.
Example
Sample conversion
Before
name,email Ada,ada@example.com Ben,ben@example.com
After
[{"name":"Ada","email":"ada@example.com"},{"name":"Ben","email":"ben@example.com"}]Steps
How to use it
- 01
Paste CSV or JSON into the editor, or open a local file.
- 02
Choose the conversion direction.
- 03
Review the output and fix any parsing warnings.
- 04
Copy or download the converted result.
Use cases
Good for
- Convert a customer export for a REST API
- Turn JSON test data into a spreadsheet-friendly CSV
- Quickly inspect the structure of a pasted export
- Prepare sample data for documentation
Limits
What to know
- Very large files may slow the browser tab.
- Nested JSON objects are flattened for CSV output using sensible defaults.
FAQ
Common questions
Is my spreadsheet uploaded?
No. Files are read locally in your browser.
What about headers?
The first CSV row is treated as column headers unless you change the parsing options in the tool.
Custom work
Talk to SurrendaSoftNeed something more tailored?
SurrendaSoft builds custom browser tools, business workflows, and integrations for teams that have outgrown spreadsheets.