Excel & CSV Cleaner
Deduplicate rows, trim whitespace, and clean spreadsheet tables client-side without cloud upload.
Excel to CSV Converter & Duplicate Cleaner
Convert Excel (XLSX, XLS) to CSV or CSV to Excel, remove duplicate customer records or phone numbers, trim whitespace, and clean data 100% in your browser without uploading confidential files.
Drop Excel (.xlsx, .xls) or CSV File Here
Supports client contact lists, invoice exports, GST dumps, inventory sheets.
Why Convert & Clean Spreadsheets In-Browser?
Converting Excel sheets to CSV and deduplicating customer or product records is a daily task in modern offices. However, uploading customer lists or financial sheets to online converters exposes your business to catastrophic data breaches.
🔒 Zero Cloud Uploads
Unlike other converter websites that send your files to remote cloud servers, AG World Tools parses and deduplicates spreadsheets 100% inside your web browser using WebAssembly.
⚡ Column-Specific Deduplication
Easily remove duplicate leads or customer contacts based on a single key column — such as Phone Number, Email, PAN, or GSTIN — even if the other columns have slight variations.
🧹 Whitespace & Case Cleaning
Automatically trims accidental leading/trailing spaces and ignores uppercase/lowercase discrepancies to catch sneaky duplicates that basic Excel filters miss.
Frequently Asked Questions
What spreadsheet formats are supported?
You can upload Microsoft Excel Workbooks (.xlsx), legacy Excel (.xls), and Comma-Separated Values (.csv). You can export cleanly to either CSV or XLSX.
Is there any row limit on files I can upload?
Because processing happens on your local device, files with up to 100,000+ rows process seamlessly within 2-3 seconds on modern laptops and desktops.
Is my spreadsheet data uploaded or stored anywhere?
No! AG World Tools has zero server storage. All conversions and duplicate removals execute in your browser's private memory sandbox.