For converting XML to CSV, either use Excel to open the file in XML table format and save as CSV UTF-8, or a small python program using pandas library, or a desktop based XML to CSV converter for nested and bulk files. The excel method and the python method work best for flat XMLs. Automated tools are more reliable for XMLs with repeating and broken tags.
XML is a tool used to transport structured data between systems, including invoices, product feeds, API requests and replies, and financial accounting reports. CSV format is something that humans and databases operate with rows and columns and a simple import into Excel, QuickBooks, MySQL or Power BI.
The disconnect between the two lies in a problem of hierarchy. XML is hierarchical, while CSV is not. All XML to CSV translations are inherently flattening decisions, and all failed XML to CSV translations result from missing this point. If you need to translate your XML to CSV on Windows 11, on a Mac OS, or through hundreds of files in a folder, the following tutorial will guide you through the process, point out common mistakes that spoil results, and tell when to give up manual methods.
What Does It Mean to Convert XML to CSV?
Converting means choosing one repeating element as the "record". Each record becomes a row. Its child elements and attributes become columns.
Anything that does not fit a flat table has to be flattened, repeated across rows, or dropped. Manual tools make that choice silently, and automated tools let you control it.
How to Convert XML to CSV in Excel?
Since Excel is able to process XML data directly, this is the fastest way to handle a simple file.
Launch Excel and click on File > Open.
Open your XML file.
Select As an XML table when prompted. Excel will create a schema in case there isn't one already.
Ensure that the columns are what you expected.
File > Save As and select CSV UTF-8.
When dealing with files that have multiple levels, Data > Get Data > From File > From XML is the tool to use instead. The Power Query feature allows you to expand each level of nesting and select the columns.
Limitations to keep in mind: Excel has a row limit of 1,048,576, doesn't flatten repeated child elements well, and usually discards attributes. Also, it can only work with one file at a time.
How to Convert XML to CSV with Python and pandas?
Python suits developers who need a repeatable job. The pandas.read_xml() function makes the simple case short:
import pandas as pd
df = pd.read_xml("orders.xml", xpath=".//order")
df.to_csv("orders.csv", index=False, encoding="utf-8-sig")
The xpath argument determines which element is the record in the file. The utf-8-sig encoding prevents Excel from misinterpreting accented letters once the CSV file is opened again. If more flexibility is needed regarding attributes, then xml .etree. Element Tree or lxml libraries and the csv module can be used to write out rows.
Python is scalable and free, but requires maintenance. Each new XML schema will require new mapping code, and complex files may require custom handling. Also, it fails to process invalid XML without exception handling.
How to Convert XML to CSV Using Notepad++ and Online?
Notepad++ will format and validate XML; however, Notepad++ will not flatten XML. When saving the file with a .csv extension, it simply renames the file. Do not use it to convert the file since it may be used to validate the structure.
A free online converter may be used when converting a public file that is relatively small. However, any file that contains sensitive information such as personal details about customers, finances or health information should not be uploaded since you cannot verify the storage and deletion of the file. This would be in violation of HIPAA and GDPR guidelines or company policy on data.
How to Convert XML to CSV Using Professional XML Converter Tool?
Use this technique if you want to convert XML data to CSV format in bulk or if you have deeply nested, big or malformed XML files. XML Converter is an offline utility that does not have any upload process like online tools.
Steps:
First download, install and run SysTools XML Converter.
Select Add File(s) for one file, or Add Folder(s) for a complete folder along with subfolders.
Check the loaded XML data from the preview panel.
From the Export Options, select CSV.
Select Change to change the destination folder location.
Select Export.
Features:
Conversion of entire folder in batch mode with no restriction on file number
Preservation of original folder structure
Automatic correction of missing or damaged tags of invalid XML data
Processing of nested elements, custom tags and attributes
Over 15 export options like XLSX, JSON, PDF, HTML, SQL and SQLite, thus one tool will serve all future purposes
Operating systems supported are Windows 11 & 10 (64-bit), macOS Big Sur through Sequoia
What are Common Problems When You Convert XML to CSV?
Column deletion and shifting: Some entries have missing or misplaced columns. Specify all the columns to avoid having data shifted instead of leaving empty columns.
Nesting and repetition: An order with three lines requires three rows or CSV. You should know this in advance.
Attributes omission: Simple parsers will ignore attributes completely. Make sure that attributes get included in the result.
Garbled characters: Excel uses the old character encoding when opening CSV files. You should save files as UTF-8+BOM or set the character encoding explicitly.
Commas inside values: Values with commas have to be enclosed in double quotes. It should be done automatically by good parsers.
Reformatting of ZIP codes and changing of date format: Excel reformats ZIP codes, ID numbers and date formats upon opening. Import as text and don't double-click the file.
Malformed XML: The presence of just one malformed element will make parsers fail. Either validate your input data or find a parser that repairs it.
Namespaces: Tag prefixes prevent using XPath. Either register the namespace or remove it from tags.
What are Best Practices Before XML to CSV Conversion?
Check this before you start your XML to CSV conversion process.
Validate the XML file by opening it in a browser or validator.
Determine the record node. Find out which repeating node will be the row.
Create your column mapping. Write down the tags and attributes that will be used as columns.
Decide how you will manage nesting - repeat the parent node value or split them up into linked files.
Try it out on a sample. Make sure that after converting 20 records the data matches the original.
Never overwrite your original file. Always keep your original file.
Make sure that encoding and delimiter match the target system expectations.
Count the rows against the record count in the XML file.
Which Method Should You Choose?
It depends on your file and your volume.
One small, flat file: Use Excel.
A repeatable data pipeline with one fixed schema: Use Python and pandas.
A quick look at public, non-sensitive data: An online tool is acceptable.
Nested, large, invalid or bulk XML, or sensitive data: Use a desktop converter like XML Converter Tool.
FAQs
Q1. How to Convert XML to CSV in Excel?
Answer. Launch Excel and click File > Open. Then select your XML file and choose "As an XML table". After that select Save As > CSV UTF-8. In case of nested data, choose Data > Get Data > From File>From XML and expand tables in Power Query.
Q2. Is There a Free Way to Convert XML to CSV Online?
Answer. There are various websites offering this service for free. Excel can also be used for converting simple files. It's better not to upload any confidential data since you are not able to control how it is stored or deleted.
Q3. How to Convert XML to CSV Without Losing Nested Data?
Answer. Determine how you want to flatten hierarchy first. Either replicate parent elements in every child row or make several CSV files with nested information. Excel and other simple tools will probably ignore nested data. Thus, it's better to use Power Query, Python or any specialized tool.
Q4. How to Convert XML to CSV in Python?
Answer. Use pandas.read_xml() function and specify an xpath for your record element. After that use to_csv() with index = False and utf-8 encoding. In case of attributes or any other unusual structure, use xml.etree.ElementTree for parsing and csv for writing.
Q5. Can I convert multiple XML files into CSV at once?
Answer. Yes, Excel cannot batch files, but Python script or batch converters can do that. XML Converter supports batch conversion of folders and sub-folders along with maintaining their folder hierarchy.
Q6. Is it safe to use an online XML to CSV converter?
Answer. It is safe to use an online converter for non-confidential data. However, invoices, patients' data or confidential client information should be converted using an offline desktop converter, where the file does not leave your computer.
Q7. Why do I see strange characters in my CSV file?
Answer. It means that there is an encoding issue. You need to save/export file in UTF-8 (BOM for Excel) encoding and then import using the same encoding.
Q8. Which is the best XML to CSV converter for large files?
Answer. For files having more rows than the maximum row limit of Excel, you should use a Python script or large file converter tool. Always test your files on samples first.
Conclusion
The technique to convert XML to CSV format has little to do with the program and more to do with choosing the method for flattening the tree. The tools that can be used are Excel and Python. In case when XML is either nested or corrupt, very large, or located in multiple folders, a desktop-based converter should be used. Always make sure to validate the file first.
