Convert CSV files to Excel XLSX instantly with our free online converter. Bold headers, auto column width, date formatting, freeze pane, and filters. Perfect for PayPal, Shopify, Stripe, and Google Analytics CSV exports. No signup, in your browser.

Turn CSV exports from CRMs, payment systems, or accounting tools into proper Excel workbooks. Our CSV to Excel converter outputs .xlsx (not .xls), with optional bold header row, auto column width, date detection, freeze pane, and column filters. Paste or upload your CSV—conversion runs in your browser, so your data stays private.

What is CSV to Excel Conversion?

CSV to Excel conversion turns comma-separated (or other delimiter) text data into a Microsoft Excel workbook (.xlsx). CSV is a plain-text format; Excel workbooks support formatting, formulas, multiple sheets, and filters. Converting CSV to Excel makes export data easy to work with, share, and present.

Why Choose Our CSV to Excel Converter?

We output modern .xlsx format with smaller file size and better compatibility. You get bold header row, auto column width, custom sheet name, number and date formatting, freeze header row, and optional auto-filters. UTF-8 BOM support keeps special characters correct in Excel. All processing is in your browser, free and private.

CSV to Excel Conversion Made Simple

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How to Convert CSV to Excel - Step by Step

Converting CSV to Excel takes three steps:

Step 1: Paste or upload your CSV: Enter data or drag and drop a .csv file. The tool auto-detects delimiter and first row as header.

Step 2: Set options: Enable bold header row, auto column width, custom sheet name, date formatting, freeze pane, and column filters as needed. UTF-8 encoding is used so special characters display correctly in Excel.

Step 3: Convert and download: Click Convert to Excel and download your .xlsx file. Open it in Excel, Google Sheets, or any compatible app.

Features of Our CSV to Excel Converter

Our CSV to Excel converter includes:

• Output as .xlsx: Modern Excel format, smaller and more reliable than .xls.
• Bold header row: First row is formatted bold in Excel.
• Auto column width: Column widths fit content automatically.
• Custom sheet name: Name your worksheet.
• Number formatting: Numeric columns get number format in Excel.
• Date detection: Date columns are formatted as Date type in Excel.
• Freeze header row: Row 1 stays visible when scrolling.
• Column filters: Auto-filters on every column header.
• UTF-8 BOM: Special characters and non-Latin scripts display correctly in Excel.
• Multiple sheets: Option to split multiple tables into separate sheets.
• Processed in your browser. Your data never leaves your device.
• Completely free: No signup, no watermarks, no limits.

Convert CSV to Excel Today

Convert CSV to Excel in seconds. Whether you have PayPal, Shopify, Stripe, or any other CSV export, get a proper .xlsx file with formatting, headers, and filters.

Free, private, and in your browser. No signup required. Try it now.