CSV to XLSX CSV to XLSX

CSV → XLSX with literal text cells

UTF-8 CSV is imported as text: identifiers keep leading zeros and formula-looking cells are not executed. Comma, semicolon and tab separators are detected from the source. Limits: 65,536 rows, 256 columns and 64 MiB.

  1. Upload UTF-8 CSV with consistently quoted fields and one delimiter.
  2. Check leading zeros, dates, decimal punctuation and non-Latin text in XLSX.
  3. Convert selected text columns to numbers manually in your spreadsheet if needed; keep the original CSV.
Choose File CSV → XLSX Drag & drop files here … (or click to select files) or drop an archive with files Upload file

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Free uses and credits

One successful conversion is free per account, once across all file converters. After that, each source file is charged at the displayed rate.

Cost in credits: 3.

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Credits or a free use are spent only after the results are saved. Getting the same ready files again is free.
Quick start

Import UTF-8 CSV into XLSX as text to preserve identifiers without executing formulas.

  1. Upload consistently delimited CSV
  2. Convert with literal text import
  3. Check zeros, quotes and non-Latin text in XLSX

Supported formats

This converter shows the accepted source formats and the result format.

Input files
CSV XLSX XLS ODS OTS FODS XLSM XLT XLTX DIF SLK NUMBERS
Result
XLSX

A damaged file or a non-standard codec can still fail even when the extension is supported.

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