CSV & Excel Tools
CSV encoding conversion, CSV to Excel, Excel to CSV, and more — handle CSV & Excel files right in the browser. Your files are never uploaded to a server, so your data stays safe.
CSV & Excel Tool List
CSV Encoding Converter
Fix CSV character encoding issues. Convert between Shift_JIS and UTF-8 to resolve garbled text in Excel.
CSV to Excel Converter
Convert CSV files to Excel (.xlsx) format. No character encoding issues, with auto column width.
CSV Viewer
View CSV files as readable tables in your browser. Auto-detects encoding with sort and filter support.
Excel to CSV Converter
Convert Excel files (.xlsx/.xls) to CSV or TSV. Choose sheets, encoding, and line endings.
TSV ⇔ CSV Converter
Switch between TSV and CSV formats with one click. Auto-detects encoding for seamless conversion.
🔒 Your files are never sent to a server
All file processing runs entirely in your browser.
CSV & Excel Articles
All articlesHow to Open CSV Files | Step-by-Step Guide for Windows, Mac & Mobile
Learn how to open CSV files on Windows, Mac, iPhone, and Android. Covers Excel, Google Sheets, browser-based tools, fixing garbled text, and changing your default CSV app.
Excel Shortcut Keys Cheat Sheet | Essential Keyboard Shortcuts for Windows & Mac
A curated cheat sheet of Excel keyboard shortcuts organized by category, with both Windows and Mac equivalents. Covers copy/paste, cell operations, formatting, formulas, sheet navigation, and more.
File Size Units Explained | KB, MB, GB, TB Conversion Chart
A quick-reference chart for file size units from bytes to terabytes. Includes conversion tables, real-world size examples by file type, email attachment limits, and the Mbps vs MB distinction.
How to Convert CSV to Excel | Complete Guide to Saving as XLSX
Learn how to convert CSV files to Excel (xlsx) format. Covers 5 methods for Windows and Mac, batch conversion, and how to avoid character encoding and formatting issues.
How to Fix CSV Character Encoding Issues | One-Click Encoding Converter
Fix garbled text in CSV files by converting character encoding. Learn why CSVs display incorrectly in Excel and how to convert between UTF-8 and Shift_JIS on Windows and Mac.
UTF-8 vs. Shift_JIS: Understanding CSV Character Encoding
Learn the differences between UTF-8 and Shift_JIS character encodings. Understand why CSV files get garbled, how to choose the right encoding, and how to convert between them.