Why are formulas missing from the CSV?

CSV can only hold values. Each cell is exported as its last calculated result.

How do I export all sheets?

Choose “All sheets”; you get one CSV per sheet in a ZIP.

Which encoding is used?

UTF-8. Tick the BOM option if the CSV will be opened in Excel and contains accented characters.

Data & Spreadsheets

Excel to CSV

Export a sheet to CSV for import into a database, a CRM or a script — with the delimiter and encoding the target system wants, not whatever Excel decides.

Runs in your browser — files never leave your device.

Drop Excel (XLSX), Excel 97–2003 (XLS), ODS files here

or click to browse · paste from clipboard · up to 100 MB each

Select files

Options

Sheet

Delimiter

Dates

Add UTF-8 BOM (for opening in Excel)

Why convert Excel (XLSX) to CSV

Excel’s own CSV export uses your locale’s separator and a legacy encoding, which breaks imports into systems expecting UTF-8 and commas. Here you choose both explicitly and get a file that imports first time.

Formulas are replaced by their computed values, dates are written in ISO format (or as displayed), and every sheet can be exported at once as separate files.

How it works

Drop Excel (XLSX), Excel 97–2003 (XLS), ODS files onto the box above, click it to browse, or paste from the clipboard.
Adjust the options if you need to — the defaults suit most cases.
Press Convert. The work happens on your device, so speed depends on your computer or phone.
Download the CSV — individually or all at once.

About the formats

Excel (XLSX) · Microsoft Excel workbook · .xlsx

The current Excel format: multiple sheets, formulas, formatting, charts and pivot tables in one file.

XLSX stores both the formula and its last computed value, so a converted CSV contains the values.
Maximum 1,048,576 rows and 16,384 columns per sheet.
XLSM is the same format with macros enabled.

Excel 97–2003 (XLS) · Legacy Microsoft Excel workbook · .xls

The binary Excel format used until 2007, limited to 65,536 rows and increasingly refused by web apps.

XLS supports 65,536 rows and 256 columns per sheet — larger data is silently cut off.
Many banks and legacy systems still export XLS.
Excel opens XLS in Compatibility Mode and recommends saving as XLSX.

ODS · OpenDocument spreadsheet · .ods

The LibreOffice Calc spreadsheet format, an open ISO standard that Excel and Google Sheets can also open.

ODS supports formulas, multiple sheets and charts like XLSX.
Some Excel-specific functions and pivot features do not round-trip through ODS.
ODS files are ZIP archives of XML, like ODT.

CSV · Comma-separated values · .csv

A plain-text table with one row per line and commas (or semicolons) between cells: the lowest common denominator for exchanging data.

CSV has no sheets, formulas, formatting or data types — everything is text.
European locales often use semicolons as separators because the comma is the decimal mark.
Values containing commas or line breaks must be wrapped in double quotes.

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