Excel to CSV
Converter.
Upload an Excel file and download it as CSV. Supports multiple sheets and custom delimiters. Runs entirely in your browser — your data stays private.
What is Excel to CSV Conversion?
WHY CONVERT EXCEL TO CSV?
Excel files (.xlsx) are great for spreadsheets, but many tools — R, Python, databases, APIs, and data pipelines — work best with CSV. Converting Excel to CSV strips away formatting and gives you clean, portable data that any tool can read.
This tool processes your file entirely in the browser. Nothing is uploaded — your data stays on your device. This makes it ideal for sensitive financial data, proprietary datasets, or any file you don't want leaving your machine.
WHEN TO CONVERT EXCEL TO CSV
Convert Excel to CSV when importing data into R or Python for analysis, loading data into a database or data warehouse, preparing files for automated data pipelines, reducing file size by removing formatting overhead, or sharing raw data in a universally compatible format that works across all platforms and tools.
FREQUENTLY ASKED QUESTIONS
Is my data safe when converting Excel to CSV? +
Yes. This converter runs 100% in your browser. No data is sent to any server. Your files are processed locally using JavaScript, so your data stays on your device at all times.
Can I select which sheet to export? +
Yes. If your Excel file contains multiple sheets, the converter shows a sheet selector so you can choose which one to export. The first sheet is selected by default. You can switch sheets and download each separately.
What Excel formats are supported? +
The converter supports all common Excel formats: .xlsx (Excel 2007+), .xls (legacy Excel 97-2003), .xlsb (binary workbook), and .xlsm (macro-enabled workbook). Macros are ignored during conversion — only cell data is exported.
Analyze your data directly in R.
RChat lets you import CSV and Excel files, clean data, run statistical analysis, and generate publication-ready charts — all powered by AI.