CSV and JSON Converter
Convert comma-separated CSV with a header into a JSON array, or turn a flat JSON object array into CSV. Quoted commas, quotes and newlines are supported.
- Free
- No sign-up
- Runs in your browser
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How this calculation works
CSV needs unique nonempty headers and equal-width rows; values become strings. JSON must be a nonempty array of flat objects. CSV output prefixes formula-leading strings with an apostrophe to reduce spreadsheet formula execution; this changes those cell values. Limits: 5000 data rows and 100 columns. Large output is stopped before allocation. JSON integers outside the safe numeric range are rejected; keep long identifiers as strings.
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Discover VISU LinkHow to use it
- Choose an operation and enter the text, or choose a generation quantity.
- Run the tool and check any format warning before using the result.
- Copy the result when ready. Clear the fields to remove it from this page.
Examples
Example 1
name,score with Ana,10 becomes [{"name":"Ana","score":"10"}].
Example 2
A quoted cell "Rio, Brasil" keeps its comma inside one field.
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Questions
What does this tool do?
Convert comma-separated CSV with a header into a JSON array, or turn a flat JSON object array into CSV. Quoted commas, quotes and newlines are supported.
What are its format limits?
CSV needs unique nonempty headers and equal-width rows; values become strings. JSON must be a nonempty array of flat objects. CSV output prefixes formula-leading strings with an apostrophe to reduce spreadsheet formula execution; this changes those cell values. Limits: 5000 data rows and 100 columns. Large output is stopped before allocation. JSON integers outside the safe numeric range are rejected; keep long identifiers as strings.
Can I see a worked example?
name,score with Ana,10 becomes [{"name":"Ana","score":"10"}].
Is this text sent to a server?
Text and results stay on this page. Nothing is uploaded or automatically saved. Copying sends the result to your clipboard; downloading creates a local file.
Do I need an account?
No account is required to use the tool or copy its result. VISU services are optional.