Convert CSV to JSON
Turn a CSV file into clean JSON in seconds. Each row becomes an object keyed by your header row, producing a tidy array of objects you can feed to an API, a script, or a database. Copy it to your clipboard or download the .json file. Everything runs in your browser.
Drag and drop your file here
or click to browse. Accepts .csv up to 50 MB.
Your data never leaves your browser. Example: data.csv
How accurate is this? This converter parses your file using deterministic rules (no AI or guessing). The output matches the source data exactly. If you notice any issue, please report it using the link below.
How to Export and Convert CSV Data
- 1
Get your CSV
Export from a spreadsheet, database, or app. The first row should be the column headers.
- 2
Upload or paste
Drag and drop the .csv file, or switch to the Paste tab and paste the CSV text.
- 3
Review the preview
Check that columns split correctly and the data looks right in the preview table.
- 4
Copy or download JSON
Click Copy JSON for the clipboard, or Download JSON to save an array of objects.
Frequently Asked Questions
- What does the JSON output look like?
- An array of objects, one per CSV row, with keys taken from the header row. For example name,age with row Alice,30 produces [{"name":"Alice","age":"30"}].
- Are values typed as numbers or kept as strings?
- Values are kept as strings, exactly as they appear in the CSV. CSV has no type information, and guessing types is how data gets corrupted (leading zeros lost, long numbers rounded). Keeping strings is predictable and lossless. You can cast types afterward in your code if needed.
- Does it handle quoted fields with commas and newlines?
- Yes. Standard CSV quoting is fully supported, so a quoted field like "Smith, John" stays a single value, and newlines inside quotes are preserved.
- Can I paste CSV instead of uploading?
- Yes. Use the Paste tab, paste your CSV, and convert. Handy for quick conversions.
- Is my data private?
- Yes. The conversion runs entirely in your browser. Nothing is uploaded.
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This tool is not affiliated with or endorsed by CSV or its parent company. All trademarks belong to their respective owners.