CSV vs Excel
CSV and Excel both hold tabular data but at very different levels of capability. CSV is a plain-text file with comma-separated values — simple and universal but featureless. Excel (XLSX) is a rich spreadsheet format with formulas, formatting, charts, and multiple sheets.
Use CSV to move raw data between systems, import/export, or feed databases and scripts — it is universal and lightweight. Use Excel when you need formulas, formatting, multiple sheets, charts, or human-friendly spreadsheets.
CSV vs Excel: side-by-side comparison
| Attribute | CSV | Excel |
|---|---|---|
| Format | Plain text | Binary/XML spreadsheet |
| Formulas | No | Yes |
| Formatting & styles | No | Yes |
| Multiple sheets | No (one table) | Yes |
| Charts & macros | No | Yes |
| Best for | Data interchange, imports | Analysis, reporting, dashboards |
| File size | Very small | Larger |
What is CSV and what is Excel?
CSV
CSV (Comma-Separated Values) is a plain-text file where each line is a row and commas separate columns. It carries no formatting, formulas, or sheets — just data. That simplicity makes it the universal format for importing and exporting between databases, apps, and programming tools.
Excel
Excel's XLSX format is a full spreadsheet that stores formulas, cell formatting, multiple worksheets, charts, pivot tables, and macros. It is built for analysis and presentation, but the extra structure means larger files and Excel-style software to open it fully.
When to use which
Choose CSV
Choose CSV when transferring data between systems, importing into a database, or feeding scripts — anywhere you need a clean, universal, formula-free dataset.
Choose Excel
Choose Excel when you need calculations, formatting, several sheets, charts, or a polished spreadsheet for people to read and work in.
Convert between these formats
Use our free, browser-based converters: