Sobre os arquivos XLSX
Planilha Excel
Formato moderno de planilha Microsoft Excel (2007+) baseado em XML aberto. Suporta fórmulas, gráficos, múltiplas abas, formatação rica.
Família
Spreadsheets & Data
Extensão
.xlsx
Tipo MIME
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Pode ser usado como
COMO NASCEU O
FORMATO XLSX.
XLSX is the XML-based successor to the legacy binary .xls format that ruled business computing from 1987. Introduced with Excel 2007 as part of the Office Open XML standard, it reorganized the entire spreadsheet data model into a bundle of XML files inside a ZIP archive — each worksheet, style, formula set, and chart stored separately.
The structural change made files smaller, more robust to corruption, and far easier for third-party tools to parse. XLSX is now the world's default format for financial models, inventory lists, scientific data, and the occasional 1-million-row monster that someone really should have put in a database.
CURIOSIDADES E
FATOS INTERESSANTES.
An .xlsx file is a ZIP archive — rename it to .zip and you can browse the internal XML.
Excel supports exactly 1,048,576 rows and 16,384 columns per worksheet — a 20-bit × 14-bit address space.
A single XLSX file can have many worksheets, each up to ~17 billion cells (mostly empty).
The 2010 UK population census lost 16,000 COVID cases because someone hit Excel's row limit in an XLS file.
Formulas are stored as plain text inside XML — including the cached result Excel computed last.
VANTAGENS E
LIMITAÇÕES.
Vantagens
- Much smaller than legacy .xls files thanks to ZIP + XML.
- Human-readable structure — easy to extract data programmatically.
- Supports macros (as .xlsm variant), charts, pivot tables, conditional formatting.
- Universal support: Excel, LibreOffice, Google Sheets, Numbers, pandas.
- ISO/IEC 29500 standardized.
Limitações
- Macros in .xlsm are a common malware vector — disabled by default in Office.
- 1M-row limit is a cultural problem — people put too much data in Excel.
- Subtle formula differences between Excel, LibreOffice, and Sheets.
- Large files with many formulas recalculate slowly.
Tamanhos típicos de arquivo
Small budget spreadsheet
20–80 KB
Financial model with charts
1–10 MB
Large dataset (100k rows)
10–50 MB
Enterprise model (1M+ rows)
100–500 MB
Especificações técnicas
- MIME type
- application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
- Container
- ZIP (Office Open XML)
- Max rows
- 1,048,576
- Max columns
- 16,384
- Released in
- Microsoft Office 2007
- Variants
- .xlsx, .xlsm (macros), .xlsb (binary)
CONVERTER A PARTIR DE
XLSX
Casos de uso comuns
Financial data, business reports, data analysis, budgets.
Formatos relacionados
Comparativos populares
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XLSX vs CSV
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XLSX vs JPG
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XLSX vs PNG
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XLSX vs HTML
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Conversões populares de XLSX
Os destinos mais procurados ao converter arquivos XLSX.
Perguntas frequentes sobre XLSX
Perguntas frequentes
XLSX is the default spreadsheet formato para Microsoft Excel since 2007. It is based no Office abrir XML padrão e suporta multiple sheets, formulas, charts, pivot tables, e conditional formatoting.
XLSX arquivos abrir in Microsoft Excel, Google Sheets (free), LibreOffice Calc (free), e Apple Numbers. Online viewers like OneDrive e Google Drive also support them.
Use XLSX when you need formatoting, formulas, multiple sheets, ou charts. usar CSV para simples tabular data that needs to be imported em databases, scripts, ou ferramentas that require plain text data interchange.