Convert CSV to JSON and back
Spreadsheets export CSV; web APIs and apps speak JSON. Moving data between them means turning rows and columns into objects, and back again. This converter does both directions: it reads a CSV's header row to name the fields and produces clean JSON, or flattens JSON records back into a CSV you can open in a spreadsheet.
How to use it
- Paste CSV to get JSON, or JSON to get CSV.
- Confirm the first CSV row is treated as column headers.
- Copy the converted result.
Where it helps
- Importing spreadsheet data into a program that needs JSON.
- Exporting JSON records into a spreadsheet for review.
- Reshaping data between two tools that expect different formats.
Questions people ask
What about commas inside values? Properly quoted fields are handled, so a value containing a comma stays intact rather than splitting into two columns.
Is my data uploaded? No — conversion runs locally in your browser.