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SnapOtter/apps/docs/tools/data/csv-excel.md
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SnapOtter 8532f3227b docs: audit all 157 tool pages against live schemas
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---
description: Convert between CSV and Excel (XLSX), both directions.
---
# CSV to Excel
Convert between CSV and Excel (XLSX) formats in both directions. Upload a CSV or TSV file to get XLSX, or upload an XLSX file to get CSV.
## API Endpoint
`POST /api/v1/tools/csv-excel`
Accepts multipart form data with a CSV, TSV, or XLSX file and a JSON `settings` field.
## Parameters
| Parameter | Type | Required | Default | Description |
|-----------|------|----------|---------|-------------|
| sheet | integer | No | `1` | Worksheet number to export when converting from XLSX (min 1) |
## Example Request
CSV to Excel:
```bash
curl -X POST http://localhost:1349/api/v1/tools/csv-excel \
-H "Authorization: Bearer si_your-api-key" \
-F "file=@data.csv" \
-F 'settings={"sheet": 1}'
```
Excel to CSV:
```bash
curl -X POST http://localhost:1349/api/v1/tools/csv-excel \
-H "Authorization: Bearer si_your-api-key" \
-F "file=@report.xlsx" \
-F 'settings={"sheet": 2}'
```
## Example Response
```json
{
"jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
"downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/data.xlsx",
"originalSize": 2048,
"processedSize": 5120
}
```
## Notes
- Conversion direction is auto-detected from the input file extension: `.csv` or `.tsv` produces `.xlsx`, and `.xlsx` produces `.csv`.
- The `sheet` parameter only applies when converting from XLSX. It selects which worksheet to export.
- TSV (tab-separated values) files are supported alongside CSV.