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CSV to Excel (XLSX)

Convert a CSV file into a clean Excel (XLSX) spreadsheet.

✓ Free to use
⚡ Queue-powered
🔒 Privacy-first

How it works

1

Upload your CSV file

Select a comma-separated or semicolon-separated CSV file. The first row is treated as the header row.

2

Rows and columns are parsed

The CSV is parsed and each column is mapped to a named Excel column. Numeric values are detected and stored as numbers, not text strings.

3

XLSX file is generated

An Excel-compatible .xlsx file is created with your data structured in Sheet 1. Headers are placed in row 1.

4

Download and open in Excel

Download the .xlsx file and open it directly in Microsoft Excel, Google Sheets, or LibreOffice Calc.

Quick start

Start in under 10 seconds: choose file, process, download.

No signup required. Files are automatically cleaned up based on your plan retention settings.

Step 1

Upload

Drag files in or browse from your device.

Step 2

Process

Queue runs the conversion with smart defaults.

Step 3

Download

Get your output instantly when done.

All-time runs

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30-day success

Reliable processing

Average speed

Fast avg

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Step 1 — Upload a file

Drag a JPG, PNG, or WebP image onto the drop zone below, or click Browse. Drop a PDF onto the upload zone below to get started. Select a file or drag it onto the upload zone below.

Step 2 — Processing in the cloud

Your file is in the queue. This usually takes a few seconds — Pro users get priority processing.

Step 3 — Compare, download, or share

Drag the compare slider to see before/after. Use ← → keyboard arrows for precision. Download when ready. Your result is ready. Download the output or save it to your workspace.

Usage

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Drag & drop your image here

or

Max file size: 10MB

Max files per run: 1

Supported formats: CSV

Upload exactly one CSV file, up to 10MB. It will be converted into an Excel (XLSX) file.

Smart file detection

✓ 1 image uploaded successfully

Ready to compress

✓ images uploaded successfully

Ready to compress

Saved tool settings

Save your current settings and apply them with one click.

Pipeline Builder

Build a multi-step flow (compress, convert, resize, merge) and run it in one upload.

Saved presets

Sign in to save and reuse pipeline presets.

Files are uploaded and processed in the background. You will see links and previews when the run is finished.

Your files are ready. Download:

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PDF workspace

Keyboard: Left/Right to change page, [ or ] to rotate the focused page, +/- to zoom, 0 to reset zoom.

Delete/restore, duplication, and page rotation apply to the reordered PDF output. Bulk rotate uses the marked target pages.

Pages

Focused page

Open full PDF
Rendering page…
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Input summary

Results

✓ Complete

Conversion Summary

Original size

Result size

Compression

Saved ratio:

Original
Optimized
Original
Optimized
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💡

Tip:

Move the slider to compare the original and optimized images side-by-side. Look at the compression badge for quality metrics.

Original

Result

Saved

Reduction

Optimization Details

Original

Settings

Processing time

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Results

Result statistics

Original size

Result size

Saved

Saved ratio:

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Downloads

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Read-only viewer results

Your file was analyzed without conversion. No output file was generated.

Read only

File size

MIME

Pages

Sheets

Image dimensions

Workbook tabs

Preview

Uploaded image preview

PDF preview

Open in new tab

Use browser PDF controls for zoom, search, and page navigation.

PDF compression summary

Original size

Compressed size

Reduced by

Success! Your PDFs are merged. Success! Your PDF is compressed. Success! Your PDF was split. Success! Your PDF is ready. Success! Your PDF is ready.

Download your output now or save it to your workspace.

Download merged PDF Download compressed PDF Download split files Download PDF Download edited PDF ⚡ Faster processing with Pro

CSV processing summary

Input rows

Output rows

Output files

Rows removed

Output size

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Smart next steps

Based on this run, here are two high-impact follow-up actions.

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About CSV to Excel (XLSX)

CSV files are the universal export format for databases, analytics platforms, and CRMs, but they are difficult to navigate when opened raw in Excel: column widths collapse, filters are unavailable, and formulas cannot reference headers by name. Converting a CSV to XLSX gives reci...

→ Convert a CRM export from CSV to XLSX before sharing it with a manager who works in Excel. → Transform a raw analytics data dump into a spreadsheet for filtering, pivoting, and charting. → Prepare a CSV product catalog for import review by converting it to a structured XLSX file. → Convert a database export to XLSX so a non-technical recipient can open and navigate it without errors.

Related guides and workflows

Guide

How to Use Excel Viewer Online

Learn how to use Excel Viewer online. Upload an Excel file to inspect workbook metadata such as sheet names and counts.

Guide

How to Use Clean CSV File Online

Learn how to use Clean CSV File online. Clean a CSV by trimming spaces, removing empty rows, and optionally deduplicating rows.

Guide

How to Use CSV to Excel (XLSX) Online

Learn how to use CSV to Excel (XLSX) online. Convert a CSV file into a clean Excel (XLSX) spreadsheet.

📦 Supported formats 1 file types

CSV → XLSX

❓ Frequently asked questions 4 answers

Both comma-separated and semicolon-separated CSV files are supported. If your file uses an unusual delimiter, clean it first using the Clean CSV tool.

No. CSV files store plain values, not formulas. Any formula text in the CSV will be stored as a string in the Excel output, not executed as a formula.

Yes. The first row of the CSV is treated as column headers and placed in row 1 of the Excel output. All subsequent rows are treated as data.

Free accounts support CSV files up to 10 MB. Pro accounts extend this for larger exports. Very large CSVs with hundreds of thousands of rows may take a few extra seconds.