CSV to Excel Converter – Free Online CSV/TSV to XLSX

✓ Free CSV to Excel Converter Online

Convert CSV or TSV text to Excel (.xlsx) files. Multi-sheet support, custom headers, auto column width. 100% browser-based.

📊 Multi-Sheet Support — Create multiple sheets from different CSV/TSV data in one Excel file.
📝 Custom Headers — Optionally treat the first row as headers with customizable styling.
❄️ Freeze First Row — Enable frozen header row for easy scrolling in Excel.
📏 Auto Column Width — Automatically adjusts column widths based on content.

Full guide, how-to & FAQ →

⚠️ JavaScript is required This tool runs entirely in your browser and needs JavaScript. Please enable JavaScript, or open this page in a modern browser with JavaScript support, to use all features.

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