Data & spreadsheet tools

CSV ↔ Excel converter

Convert between CSV and Excel (.xlsx) entirely in your browser. Supports auto delimiter detection, skipping empty lines, and custom sheet name. No file uploads.

CSV input

Export settings

Delimiter

Skip empty lines

Sheet name

All CSV and Excel files are parsed and converted locally in your browser. Nothing is uploaded.

How to Use CSV ↔ Excel Converter

Select conversion mode: CSV to XLSX or XLSX to CSV.
**CSV to XLSX**: Enter or paste CSV content, set delimiter (or auto-detect), enter sheet name, and click 'Download XLSX'.
**XLSX to CSV**: Click 'Choose XLSX file', select a sheet, set output delimiter, view preview, and click 'Copy CSV' or 'Download CSV'.
Conversion happens entirely locally; no data privacy concerns.

Tips

Supports auto-detection of common delimiters (comma, tab, semicolon, pipe).
For large Excel files, the browser may freeze briefly; please wait.
Ensure CSV format is correct, especially fields containing special characters (quotes, newlines).

SQL Formatter

Format SQL queries with smart line breaks and indentation, optional uppercase keywords, and fully local processing with no uploads.

Random Birthday Generator

Random birthdays by age/date range with age and zodiac.

CSV visualizer

Inspect CSV data locally with row/column stats, inferred column types, table preview and a lightweight line chart.

CSV to YAML

Turn tabular CSV data into YAML structures locally in your browser, with configurable delimiter and header row.

Metadata Editor

Edit Word/Excel/PDF document metadata such as title, author, dates, keywords, company and manager fully in your browser with no uploads, suitable for privacy cleanup before sharing.

Excel merger

Merge multiple Excel workbooks locally, either keeping sheets as tabs or combining all data into a single sheet and downloading a new file.