CSV vs XLS
Um comparativo detalhado de CSV (Comma-Separated Values) e Excel Spreadsheet (Legacy) — tamanho de arquivo, qualidade, compatibilidade e qual escolher de acordo com seu fluxo de trabalho.
CSV (Comma-Separated Values)
Spreadsheets & DataCSV is a simple text-based format for tabular data where values are separated by commas. It is the universal interchange format for data between spreadsheet applications, databases, and programming languages.
Sobre os arquivos CSVExcel Spreadsheet (Legacy)
Spreadsheets & DataXLS is the legacy binary format for Microsoft Excel 97-2003 spreadsheets. While superseded by XLSX, it remains common in archived data and older business systems.
Sobre os arquivos XLSComparativo de vantagens
CSV Vantagens
- Universally readable — every spreadsheet, database, and programming language.
- Human-readable in any text editor.
- Stream-friendly — can process terabytes with constant memory.
- Git-friendly — clean diffs of row changes.
- Tiny overhead vs columnar data structures for simple data.
XLS Vantagens
- Universal legacy — every Excel since 1997 opens .xls natively.
- Binary format is compact and loads quickly.
- Full support for formulas, charts, pivots, and VBA macros.
- Deep integration with every accounting and ERP system of the 1990s-2000s.
Limitações
CSV Limitações
- No standard — quoting, escaping, encoding, and separators vary wildly.
- No type information: 0042 might be an integer, a string, or an error.
- Leading zeros and large numbers often get mangled by Excel auto-conversion.
- Not suitable for hierarchical or binary data.
- Breaks when content contains the delimiter and the parser is naive.
XLS Limitações
- Row/column limits are ~64× smaller than modern XLSX.
- Macro-enabled variants are a notorious malware vector.
- Binary corruption often means total data loss.
- Cannot represent modern Excel features (dynamic arrays, LAMBDA, structured references).
- Microsoft stopped evolving the format in 2007.
Especificações técnicas
| Especificação | CSV | XLS |
|---|---|---|
| MIME type | text/csv | application/vnd.ms-excel |
| Specification | RFC 4180 (informational) | — |
| Typical separator | Comma (;), semicolon, tab, pipe | — |
| Typical encoding | UTF-8, Windows-1252, ISO-8859-1 | — |
| Line endings | LF (Unix), CRLF (Windows) | — |
| Max rows | — | 65 536 (Excel 97-2003) |
| Max columns | — | 256 (A to IV) |
| Container | — | OLE Compound File |
| Successor | — | .xlsx (2007) |
Tamanhos típicos de arquivo
CSV
- Contact export (1000 rows) 100–300 KB
- Analytics export (100k rows) 10–100 MB
- Large dataset (1M rows) 100 MB – 1 GB
- Full database dump 1 GB – 100 GB
XLS
- Simple budget (1 sheet) 30-60 KB
- Multi-sheet financial model 500 KB - 5 MB
- Data export with 65 000 rows 5-20 MB
Pronto para converter?
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Perguntas frequentes
CSV (Comma-Separated Values) is a plain text format for tabular data where each line represents a row and commas separate column values. It is the universal interchange format for databases, spreadsheets, and data analysis tools.
CSV (Comma-Separated Values) is a plain text formato para tabular data where each line represents a row e commas separate column values. It is the universal interchange formato para databases, spreadsheets, e data analysis ferramentas.
CSV files open in Microsoft Excel, Google Sheets, LibreOffice Calc, Apple Numbers, and any text editor like Notepad or VS Code. Programming languages like Python and R have built-in CSV parsing libraries.
CSV arquivos abrir in Microsoft Excel, Google Sheets, LibreOffice Calc, Apple Numbers, e any text editor like Notepad ou VS Code. Programming languages like Python e R have built-in CSV parsing libraries.
Use CSV for data interchange between systems, database imports/exports, and programmatic processing. Use XLSX when you need formatting, formulas, charts, or multiple sheets that CSV cannot represent.
Use CSV para data interchange between systems, database imports/exports, e programmatic processing. usar XLSX when you need formatoting, formulas, charts, ou multiple sheets that CSV cannot represent.