Convert Excel to CSV via API

Extract data from Excel spreadsheets into plain CSV for import into databases, data pipelines, or any system that doesn't speak XLSX.

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1 Credit per request

Sheet Selection support

10 MB Max file size

Excel in, CSV out

Terminal

$ curl -X POST "https://qkconvert.dev/api/v1/data/xlsx-to-csv" \
  -H "Authorization: Bearer sk_live_..." \
  -F "file=@sales-report.xlsx" \
  -o sales-report.csv

# 200 OK - 55ms
# date,product,quantity,revenue
# 2026-01-15,Widget A,150,4500.00

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