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Why is My CSV Messy in Excel?

Fix broken columns, encoding issues, and delimiter messiness in Excel exports.

100% Client-Side & Secure

Visualize CSV data. Period.

Drop files to instantly visualize, chart, and export. Your records never touch a server—processed entirely in your browser.

Drag and drop file here, or click to browse

Supports standard CSV files (.csv, .txt)

Or paste raw CSV text
No CSV handy? Try a sample:

How it works

When you open a CSV file in Excel, you might see all data crammed into a single column, weird symbols (UTF-8 encoding issues), or truncated numbers. This happens because of incorrect local separator settings or text encoding mismatches. Find out why this happens and how our local viewer parses them correctly.

Features & Capabilities

Everything you need to scan spreadsheet data

Fast parsing, smart automatic data types scanning, and multiple interactive exports.

Interactive Data Table

Sort columns instantly, query cells using the global regex search, select columns to display, and page through massive row sets at 60fps.

Auto-Generated Charts

Detects headers automatically, categorizes number formats, and builds line charts, comparison bar charts, or proportional pie charts.

Summary Metrics

Get instant statistical insights on all number columns, calculating averages, sum aggregates, variance range, standard deviation, and median rates.

Data Security & Privacy Guaranteed

Unlike other online conversion web services, this utility application processes everything client-side. The file never leaves your computer, ensuring compliance with strict security policies and protecting personal, commercial, or institutional databases from leak risks.

Technical Guide

Why is My CSV Messy in Excel?: Online Usage & FAQ Guide

Learn how to get the most out of our free local-first visualizer tool for your target workflow.

Frequently Asked Questions

Why does Excel put all my CSV data into one column?

This happens when Excel is configured to use a different separator (like a semicolon) than the comma separator in the CSV. You can fix this using Excel's "Text to Columns" wizard or by opening the file in our auto-detecting viewer.

How do I fix weird characters (like é or symbols) in Excel?

This is an encoding issue caused by Excel not reading the file as UTF-8. To fix it, import the data via the Data > From Text/CSV option in Excel and set the file origin to 65001: Unicode (UTF-8).