XLSX to CSV

.xlsx is the OOXML spreadsheet format. Plotiq decodes it in the browser, extracts the sheet you pick, and emits clean UTF-8 CSV — ready for Python, BigQuery, or Postgres ingestion.

Cleaner output than Excel's own Save-As-CSV, especially for non-English data.

1. Drop your .xlsx into the tool

Plotiq decodes the OOXML package in the browser — no upload, no server decode.

2. Select a sheet to export

Pick any sheet from the workbook. The preview shows the exact rows that will end up in the CSV.

3. Download clean UTF-8 CSV

Output uses UTF-8 without BOM — the one-size-fits-all encoding for Pandas, BigQuery, Snowflake, and Postgres.

Does the XLSX to CSV tool support .xls (legacy) files too?

Yes — both .xlsx (OOXML, 2007+) and .xls (BIFF, 97-2003) are accepted.

What encoding does the XLSX to CSV output use?

UTF-8 without BOM — the standard for modern ETL tools (Python, R, Pandas, BigQuery, Snowflake).

How are dates formatted in the CSV export?

Dates as yyyy-mm-dd, date-times as ISO 8601. Locale-specific formats like m/d/yyyy are avoided to prevent downstream parsing bugs.

Can I preview the sheet before converting to CSV?

Yes. The input pane shows a live grid preview of the selected sheet before you download.