Free Tool

Easily View & Manage Big CSV Files Online

Instantly open large CSV files online, in a browser-based spreadsheet. No download required.

  • Big Data: View CSVs far larger than Excel or Google Sheets will open, in a familiar spreadsheet-like interface.
  • All File Types: Upload CSV, TSV, XLS and more. Zip large files to decrease upload time.
  • Cleanup and Analysis: Filter, group, find-and-replace, calculate, and export just the rows you need.
Upload CSV
Viewing CSV Online
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  1. First create a free account, then simply upload your CSV file by clicking +New > File Upload > Browse to select a file from your machine. You can zip your file to save time uploading. Don't want to download your file? No problem. Click the Link option in the lower part of the upload box and provide a publicly accessible URL to your CSV file or to a zip of a CSV.
  2. Next your CSV file will automatically upload (and unzip if necessary). For exceptionally large files you'll see a loading bar while the file parses.
  3. Once complete, click on the file name in your Library to view the CSV file online. The viewer will open a spreadsheet in a new browser tab. Here you can filter, search, or create pivot tables with your CSV.

Opening a Hospital Price Transparency CSV

Hospital standard charge files are published as CSV, and they are why a lot of people end up on this page. One hospital file can run to millions of rows with a column for every payer and plan, which is past what Excel will open and unreadable in a plain text viewer. Gigasheet opens it, then lets you filter to the billing codes and payers you care about and export only that slice.

Payer Transparency in Coverage files are JSON rather than CSV and are larger again. For those, use MRF Viewer, which flattens the nested structure to the rate level, or read how to open and view MRFs first.

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Free Online CSV Viewer

Gigasheet's Online CSV Viewer offers a free and convenient way to view CSV files right in your browser. No software download is required and there's no cost to use the service.

Support for Big CSVs

Gigasheet operates at cloud scale, meaning you can easily view CSV files too large for Excel or Google Sheets. Need to view even bigger CSV files? Upgrade to Premium to view multi-gigabyte CSV files online.

Data Privacy & Security

Gigasheet uses a combination of encryption at rest and in transit, as well as industry leading safeguards to protect our all user data. We don't share or sell any files you load into Gigasheet.

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