Free Online CSV Tools — Viewer, Editor & Converter | CSVTool.io<br>Skip to main content<br>60 free tools · 100% private · No signupFree Online CSV Tools — View, Edit & Convert<br>60 free CSV tools in one place: open CSV files in a fast spreadsheet-style viewer, edit and clean data, convert CSV to Excel, JSON, SQL, XML, TSV, and more, or join, pivot, split, and compare files. Everything runs in your browser — files are never uploaded.<br>Open CSV ViewerBrowse all tools<br>Drop your file here or browse from your device<br>Accepts CSV, TSV, TXT. Maximum input: 10 MiB. Files above this hard limit are rejected before local processing.<br>Browse FilesPaste Data
100% FreeNo Signup RequiredBrowser-Only Processing
CSV Viewer & Editor
CSV Viewer
View CSV files in a spreadsheet-style grid with sorting, filtering, and search<br>CSV Editor
Edit CSV files online with cell editing, add/remove rows and columns<br>CSV Validator & Repair
Validate malformed CSV files, review safe repairs, and prepare a new copy for import
Convert CSV
View all converters<br>CSV → Excel
Convert CSV files to an Excel workbook (.xlsx or .xls) with optional auto-fit columns<br>Excel → CSV
Convert Excel files (.xlsx, .xls) to CSV privately in your browser<br>XML → CSV
Convert repeating XML records into a flattened CSV table<br>CSV → JSON
Convert CSV files to JSON format<br>JSON → CSV
Convert JSON arrays to CSV format<br>CSV → SQL
Convert CSV files to SQL INSERT statements<br>CSV → Parquet
Convert CSV files to Apache Parquet format in your browser<br>Sheets → CSV
Download any shared Google Sheet as a CSV file
Manipulate CSV
View all tools<br>Splitter
Split large CSV files into smaller parts<br>Compare
Compare two CSV files and highlight differences<br>Joiner
Join two CSV files on a common key column with database-style matching<br>Pivot
Create pivot tables from CSV data, or unpivot wide data back to long format<br>Sort
Sort CSV data by one or more columns<br>Transpose
Swap rows and columns in CSV files<br>Cleaner
Clean and sanitize CSV data<br>Encoding
Detect and convert CSV, TSV, or TXT encoding locally with explicit loss checks
Geo & Mapping
KML → CSV
Convert Google Earth KML files to CSV format<br>CSV → KML
Convert CSV with coordinates to KML format<br>GeoJSON → CSV
Convert GeoJSON files to CSV format<br>CSV → GeoJSON
Convert CSV with coordinates to GeoJSON format
Why Use CSVTool.io?
100% Private<br>Your files never leave your browser. All processing happens locally on your device.
No Upload Wait<br>Start once your browser reads the file. Processing time and practical file size depend on your device and the selected tool.
No Account Required<br>Start using any tool immediately. No signup, no login, no email required.
Open CSV files online<br>Use the CSV Viewer as a private CSV reader when you need to open a CSV file without Excel, Google Sheets, or uploading data. It can detect delimiters, load pasted data, show guarded inputs in a virtualized grid, and help you search, sort, filter, edit, copy, or download the result.<br>The viewer is also the fastest starting point when you want to inspect an export before sending it to the CSV Editor or a converter.
Convert CSV and Excel files<br>Use CSV to Excel when you need an .xlsx or .xls workbook with fitted columns, or Excel to CSV when a spreadsheet needs to be imported into another tool. You can also convert between CSV and JSON, SQL, XML, YAML, Markdown, HTML, TSV, and Parquet without sending data to a server.<br>Mapping workflows are covered too: turn KML, GeoJSON, or coordinate CSV files into formats that work with Google Earth, GIS tools, and data pipelines.
Fix common CSV problems<br>CSV imports often fail because of inconsistent headers, duplicate rows, delimiter mismatches, blank rows, or encoding problems. Use CSV Validator & Repair to check structure and prepare a repaired copy, CSV Cleaner to remove messy rows, and CSV Header Editor to rename or normalize columns before uploading to another system.<br>If special characters look broken, try the CSV Encoding Converter and export a clean UTF-8 or UTF-8 BOM file for Excel, databases, CRMs, and analytics tools.
All CSV Tools on CSVTool.io<br>Every tool on the site — view, edit, sort, split, compare, transpose, and convert CSV files to and from Excel, JSON, SQL, XML, and more. All of them are free and run entirely in your browser.<br>CSV Viewer & Editor<br>CSV Viewer — View CSV files in a spreadsheet-style grid with sorting, filtering, and search<br>CSV Editor — Edit CSV files online with cell editing, add/remove rows and columns<br>CSV Validator & Repair — Validate malformed CSV files, review safe repairs, and prepare a new copy for import
Convert CSV<br>CSV to Excel Converter — Convert CSV files to an Excel workbook (.xlsx or .xls) with optional auto-fit columns<br>Excel to CSV Converter — Convert Excel files (.xlsx, .xls) to CSV privately in your browser<br>CSV to XLSX Converter — Convert CSV files to the modern Excel .xlsx format — free, private, and instant in your browser.<br>XLSX to CSV Converter — Convert Excel .xlsx files to CSV —...