---
id: xlsx2csv
version: "0.8.6"
license: unclear
license_treatment: permissive
maintenance: active
---

# xlsx2csv — xlsx to csv converter

License: permissive · Maintenance: active · Downloads: 1.6M/mo

## What it is and what it does

xlsx2csv is a lightweight command-line tool and Python library that converts Microsoft Excel XLSX files to comma-separated values (CSV) format. It parses the underlying XML structure of XLSX files using an Expat SAX parser, supporting both single-sheet and multi-sheet conversion with options to filter sheets by name or pattern, customize delimiters and line terminators, override date and float formatting, and preserve hyperlinks.

You can use it as a standalone script from the command line, process entire directories of XLSX files in batch, or import it as a Python module within your own code. It requires no external dependencies beyond the Python standard library, making deployment straightforward across many Python versions.

Use it for:

- Batch convert a directory of XLSX files to CSV for data pipeline ingestion or legacy system compatibility.
- Extract specific sheets from multi-sheet workbooks while filtering by name patterns to automate report generation.
- Programmatically convert XLSX data to CSV within Python scripts for ETL workflows or data cleaning tasks.
- Customize CSV output encoding, delimiters, and date formats to match downstream system requirements.
- Convert XLSX files from STDIN or write CSV output to STDOUT for integration into shell pipelines.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Converts XLSX spreadsheet files to CSV format, handling large files efficiently through command-line or Python API.

Yes. xlsx2csv is a stable, dependency-free tool with active maintenance, no known vulnerabilities, and permissive licensing. Install it if you need reliable XLSX-to-CSV conversion in batch workflows or Python code. The low install friction and broad Python version support make it a practical choice for straightforward conversion tasks.

## Install

pip install xlsx2csv
uv add xlsx2csv
poetry add xlsx2csv

## Installing xlsx2csv

Before you install: Low friction install with no runtime dependencies. Actively maintained; last commit 2026-07-21 with 1774 repository stars.

License in practice: MIT license (permissive) places no restrictions on use, modification, or distribution.

Quickstart:

pip install xlsx2csv

from xlsx2csv import Xlsx2csv

with Xlsx2csv("myfile.xlsx", outputencoding="utf-8") as xlsx2csv:
    xlsx2csv.convert("myfile.csv")

Verify before relying:

- Whether streaming XML parsing actually prevents loading entire files into memory for very large XLSX files.

## Package facts

- License: not declared (permissive)
- Python support: unspecified
- Install friction: low
- Maintenance: active
- Downloads: 1.6M/month (top 5,000 on PyPI)
- Known vulnerabilities: none known

## Tags

xlsx to csv converter, excel to csv conversion, batch convert spreadsheets, export xlsx as csv, large xlsx file conversion, spreadsheet-conversion, cli-tool, data-pipeline

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