ExcelTool.io

CSV Viewer Online

Open a CSV file online and read it as a clean, sortable table - no Excel required. Everything runs in your browser, so your file never leaves your device.

Drop your file here or click to upload

Supports .csv, .tsv, .txt · up to 50MB

How to Open a CSV File Online

  1. Upload your file - Drag and drop your .csv file into the upload area, or click to browse. It is read locally, never uploaded.
  2. View your data - The CSV is displayed as a grid with column headers, and you can sort and filter columns.
  3. Download or convert - Export the data as an .xlsx workbook, or open it in one of our other tools.

Why View CSV in the Browser?

CSV files often come from database exports, analytics tools, and reports, and double-clicking them can mangle numbers, dates, and leading zeros in Excel. This viewer parses the raw text faithfully - including quoted fields and embedded commas - so you see exactly what the file contains. And because it is 100% client-side, even sensitive exports stay on your machine.

Frequently Asked Questions

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