Data exchangeCSV
Moving raw rows between unrelated systems
CSV has a simple text structure and is understood by almost every data tool.
CSV vs XLSX
Plain tabular text versus a full spreadsheet workbook with formulas, formatting, and multiple sheets.
Practical notes
CSV is the most portable way to exchange raw tabular data because any tool can read and write plain text rows.
XLSX preserves formulas, number formatting, charts, and multi-sheet structure, but it needs spreadsheet software to be edited safely.
Criteria
CSV
XLSX
File size & compression
None
None
Transparency
Not applicable
Not applicable
Animation
Not applicable
Not applicable
Editing
Editable in any text editor or spreadsheet
Full editing in spreadsheet applications
Openness
Open
Vendor standard
Browser support
Native in spreadsheets and many parsers
Requires spreadsheet software or an online viewer
Typical uses
Spreadsheet export, Data pipelines, Flat data exchange, Bank and tool exports
Financial and business spreadsheets, Data tables and reports, Multi-sheet workbooks, Formulas and charts
Limitations
No types, Quoting edge cases, Not suitable for nested data
Larger and more complex than CSV for simple data, Formatting can vary between spreadsheet apps, Macros live in separate XLSM files
Attribute values come from the reviewed records on each format page.Read the methodology for source and review rules.
Use-case verdicts
Winners are conditional. A format wins only when the stated condition matches your workflow.
EditingXLSX
Interactive work with formulas, formatting, and charts
XLSX keeps workbook features intact during editing in spreadsheet applications.
ArchivingCSV
Keeping the data readable without a spreadsheet product
CSV remains usable as plain text even if the original application disappears.
Sharing & deliveryXLSX
Sending a formatted report to spreadsheet users
XLSX preserves the workbook structure that business collaborators expect.
Web deliveryCSV
Publishing a dataset that scripts and browsers can consume
CSV is small, text-based, and does not require desktop spreadsheet software.