Will codes with leading zeros survive the conversion?

Yes. Text values are written into the worksheet as text, so 007 and long order numbers keep their leading zeros instead of becoming numbers.

Does every row of the CSV become a row in the sheet?

Yes. The first line becomes the header row when your file has one, and every following line becomes one row of the worksheet.

CSV to Excel Converter

Drop in a .csv or .tsv file, or paste the text, and download an .xlsx workbook that opens in Excel, Numbers or Google Sheets. Commas, semicolons, tabs and pipes are detected automatically, and you can override the delimiter before converting.

CSV values are written into the sheet as text, so order numbers, postcodes and codes with leading zeros are not silently turned into numbers. The conversion happens in your browser, so the file stays on your own machine.

Spreadsheet Converter

Convert between XLSX, CSV, TSV and JSON, right in your browser.

Choose an XLSX, CSV, TSV or JSON fileDrag and drop works too. The old binary .xls format is not supported.

Convert to

Reading and writing happen in your browser. Formulas keep their last calculated value, and styling, charts and images are not written to the output.

How it works

This utility runs locally in your browser for privacy and speed.

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Frequently asked questions

Will codes with leading zeros survive the conversion?: Yes. Text values are written into the worksheet as text, so 007 and long order numbers keep their leading zeros instead of becoming numbers.
Does every row of the CSV become a row in the sheet?: Yes. The first line becomes the header row when your file has one, and every following line becomes one row of the worksheet.

Related tools

Excel to JSON Converter

Convert an Excel worksheet to JSON in your browser: choose the sheet, get one object per row, and download the file. The workbook is never uploaded.

JSON to CSV Converter

Turn a JSON array into a CSV file in your browser: paste the JSON or drop a .json file, pick the delimiter, and download the table. Nothing is uploaded.

Excel to CSV Converter

Export an Excel worksheet to CSV in your browser: pick the sheet and the delimiter, then download the .csv file. Nothing is uploaded to a server.