Convert Excel to CSV Online

Converting Excel to CSV is the single most common step before loading spreadsheet data into a database, script, or data pipeline. CSV strips away formulas, formatting, and cell styles, leaving just the raw data values — which is exactly what programmatic tools need. The output is UTF-8 encoded and compatible with every database import utility, scripting language, and data platform.

Common use cases include importing data into PostgreSQL or MySQL, feeding an Excel export to a Python or R script, delivering a data file to a pipeline that expects CSV, and sharing with teams whose tools don't support XLSX. Converting in the browser avoids the need to install Excel or run a conversion script on a server.

This tool converts the first sheet of the workbook. Formulas become their last calculated values — not the formula text. Excel date serial numbers are converted to ISO 8601 date strings automatically. If your workbook contains multiple sheets you want to convert separately, download the first result and repeat the process for each additional sheet.