How to convert CSV to XLSX

Guide for converting plain‑text spreadsheet files (CSV, TSV, SQL script, DIF, XML) into Excel‑compatible formats such as XLSX, XLSB, XLSM, XLTM, XLAM, Excel 97‑2003, Excel 95, SpreadsheetML and XLT.

Overview

Welcome to the Spreadsheet to Text Converter knowledge base.

This guide walks you through the step‑by‑step process of turning text‑based spreadsheet files—CSV, TSV, SQL script, DIF and XML—into a variety of Microsoft Excel workbook formats.

Supported input types

  • CSV (Comma‑Separated Values) – simple, widely used data export.
  • TSV (Tab‑Separated Values) – similar to CSV but uses tabs as delimiters.
  • SQL script – result sets generated from database queries.
  • DIF (Data Interchange Format) – legacy format for spreadsheet data exchange.
  • XML – structured data that can represent worksheets and cell metadata.

Conversion workflow

  1. Upload your source file via the web interface or API.
  2. The server detects the file type automatically and parses the data according to its delimiter and schema.
  3. You can preview the parsed rows, map columns, or apply basic transformations (trim, replace, date format).
  4. Choose one or more target Excel formats: XLSX, XLSB, XLSM, XLTM, XLAM, Excel 97‑2003 (XLS), Excel 95, SpreadsheetML, or XLT.
  5. Click Convert; the engine writes the data into the selected workbook format, preserving cell types, formulas (where applicable) and sheet structures.

Output options and benefits

  • XLSX – modern Open XML format, ideal for most users.
  • XLSB – binary workbook for faster load/save on large files.
  • XLSM – macro‑enabled workbooks when you need to keep VBA code.
  • XLTM / XLAM – template and add‑in formats for reusable designs.
  • Excel 97‑2003 / Excel 95 – legacy formats ensuring compatibility with older Office versions.
  • SpreadsheetML – raw XML representation for programmematic processing.
  • XLT – template file for creating new workbooks with a predefined layout.

By using the Spreadsheet to Text Converter, you eliminate the need for multiple manual import steps, guarantee consistent data integrity and streamline your workflow from raw text data to fully‑featured Excel workbooks ready for analysis, reporting or further automation.

 Українська