Convert CSV to JSON for an API
Turn a CSV file into a JSON array you can send to an API or inspect before import.
🔒 The tool runs entirely in your browser — your data never leaves your device. How we verify this.
Why API JSON needs cleaner CSV parsing
APIs usually expect predictable JSON: one object per record, stable field names, and values that do not randomly change shape. A quick CSV export from Excel or Sheets can break that with quoted commas, blank cells, mixed types, or headers that do not match the API fields. This converter keeps the job simple: read the header row, preview the objects, choose type inference, then export flat JSON without uploading the file.
How it works
- Paste or load your CSV and confirm the header row.
- Choose delimiter and type inference settings.
- Preview the JSON array, then copy or download it for your API request.
FAQ
Can I use this output directly in an API request?
Yes, if your API expects a flat array of objects. Check the preview first, especially numbers, booleans, blank cells, and date fields. This tool does not rebuild nested JSON from flat CSV in P1.