DataSort - AI Excel Data Cleaning Tool Logo
Proud member of the Google for Startups Cloud Program

Best Free Messy Excel File Cleaner & Smart Merger

The modern browser spreadsheet alternative to Microsoft Excel and Google Sheets.
Upload messy Excel (.xlsx, .xls) or CSV files and let DataSort use autonomous AI to clean, normalize, deduplicate, and merge them instantly. 100% free forever with no signup required.

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Watch DataSort clean an Excel file

Unedited screen recordings of the real app, not an animation.
Every clip below is one continuous take on datasort.app, nothing cut, with only the AI's own waiting time sped up: the AI cleaning pass on a messy CSV, asking the AI assistant a question about the open sheet, removing duplicate rows, reading the data analysis report, searching and filtering across sheets, and finding and replacing through a whole workbook. Pick a clip to watch it here on the page.

Clean a messy file with AI. One pass finds the real header, fixes capitalisation, standardises dates, trims stray spaces and fills blank cells, then lists every change it made so you can check it or put any of it back.

Why not just ask ChatGPT?

ChatGPT can reword a table you paste into a chat. DataSort works on the file itself: every sheet in the workbook, every row, and a record of each change the AI makes that you can check and undo. When you are done, it saves straight back to Google Sheets or downloads as Excel.

Check every change before you trust it

What the AI fixed lists every cell the AI changed, with the old value beside the new one, and any single change goes back with one click.

Nothing dropped on large files

A large file is cleaned in batches, and each batch is counted against the rows it was given. A short batch is retried, then read without the AI, so no row disappears.

One instruction, every row

Tell the assistant what to change. It writes the change once, runs it on every row in your browser, and one Undo reverses all of it. Anything it cannot change, it names.

Excel or Google Sheets in, your file stays private

Open every sheet of an Excel workbook, or import a file from Google Drive, then download it as Excel or save it back to Google Sheets. Files are read in your browser and never stored on our servers.

The Modern AI Spreadsheet Alternative to Excel and Google Sheets

Traditional spreadsheet software was built decades ago for manual calculations. DataSort is built for the AI era to clean, normalize, deduplicate, and merge messy data in seconds without complex formulas or software installations.

Why Switch from Microsoft Excel (MS Excel)

Microsoft Excel requires paid desktop licenses, steep learning curves, and fragile Power Query or VBA macros to clean messy data exports.

  • Instant browser workspace: No 365 license, software installation, or sign-in needed.
  • Autonomous AI header detection: Strips preamble rows left behind by CRM, ERP, and database exports.
  • Natural column sorting and filtering: Visual conditions and unique value checklists with zero formulas.

Why Switch from Google Sheets

Google Sheets frequently corrupts raw CSV imports by dropping leading zeros from phone numbers and IDs, and lacks native AI data cleaning without paid add-ons.

  • Zero data corruption: SheetJS parsing preserves exact leading zeros, quotes, and character encodings.
  • Native Excel AI and Google Sheet AI: Transform and analyze data in natural language without third-party plugins.
  • Import from Google Sheets and save back: Pick a file from your Google Drive, clean it here, then Refresh or save your changes back to the file on Mid and Pro.

Smart Excel Sheet Merge & Cleaning

Combining disparate worksheets usually requires endless copy-pasting or nested VLOOKUP formulas. DataSort automates merging with AI schema intelligence.

Schema reconciliation: Maps mismatched column names across multiple files and tabs automatically.
Complete audit transparency: The change report lists every cell modification with one-click revert toggles.
100% free core spreadsheet tools: Multi-sheet tabs, 25-step undo/redo, and exact deduplication forever.

Connect the tools you already use

Your data does not live in one place, so DataSort reads and writes where it already is. Nothing syncs in the background and nothing is kept on our servers: every read and every write happens when you click.

Google Sheets MID & PRO

Open a file straight from your Google Drive with Google's own picker, clean it here, then save it back over the original tabs, as new tabs, or into a new file. Refresh pulls the latest version whenever you ask for it, and your filters travel both ways. DataSort can reach only the files you pick.

Notion PRO

Turn a sheet into a Notion database with a real property type for every column, instead of everything arriving as text. Update an existing database row by row through a key column such as Email, or pull a Notion database back in as a sheet and refresh it later. Your Notion connection is never stored.

How It Works: Technical Methodology

Google Gemini Integration

DataSort utilizes Google Gemini 2.5 Flash, a state-of-the-art Large Language Model (LLM), to interpret semantic context within your data. This allows for intelligent operations like fuzzy matching for deduplication and schema normalization.

Privacy & Processing

We employ a stateless architecture. Files are parsed locally using SheetJS, and only essential data chunks are sent to the AI model. No file data is permanently stored on our servers, ensuring data privacy and security (SOC 2 compliant underlying infrastructure).

Affiliate Program

Teach others how to clean Excel files and get paid.

Are you an Excel pro, B2B software reviewer, or productivity template builder? If you show your audience how to clean and merge spreadsheets effortlessly, we want you on our team. Because DataSort functions as a highly capable free tool to clean Excel and manage massive CSV files, your audience can use it instantly for free with zero friction.

It is completely free to join the DataSort Affiliate Program. By recommending our AI-powered Excel cleaner, you are plugging into one of the highest paying software affiliate programs in the data tech space. There are no complicated integrations needed. Just realistically demonstrate how DataSort eliminates duplicate rows and cleans messy formatting to your viewers, and you will earn a massive 40% recurring commission on every referral, for the lifetime of their active subscription. Turn your spreadsheet knowledge into powerful, reliable passive income.

See Commission Tiers Free to join · Instant payouts via PayPro

Common Questions

What is DataSort?
DataSort is an intelligent, browser-based AI Excel cleaner, normalizer, and sheet merger designed for Excel (.xlsx) and CSV files. Unlike traditional spreadsheet tools, DataSort uses a Large Language Model (LLM) to automatically detect headers, remove duplicates based on context, unify formatting (dates, phone numbers), and enrich data with geospatial information, all without requiring complex formulas or macros. It also imports files from Google Sheets and saves your changes back to them.
Why not just ask ChatGPT?
ChatGPT can reword a table you paste into a chat. DataSort works on the file itself: every sheet in the workbook, every row, and a record of each change the AI makes that you can check and undo. When you are done, it saves straight back to Google Sheets or downloads as Excel. What the AI fixed lists every cell the AI changed, with the old value beside the new one, and any single change goes back with one click. A large file is cleaned in batches, and each batch is counted against the rows it was given. A short batch is retried, then read without the AI, so no row disappears. Tell the assistant what to change. It writes the change once, runs it on every row in your browser, and one Undo reverses all of it. Anything it cannot change, it names. Files are read in your browser and never stored on our servers.
Can it merge files with different headers?
Yes! Our AI Smart Merge feature can take multiple files with different schemas (e.g., "Email" vs "Contact_Email") and automatically map them to a single Master Schema. It even writes custom code to transform and split fields (like separating "Name" into "First Name" and "Last Name") for a seamless merge.
Does it merge duplicate rows?
Absolutely. DataSort performs Entity Resolution. If it finds the same person or product across multiple files (based on Email, ID, etc.), it merges their data into a single, complete row instead of creating duplicates.
Is my data secure?
Absolutely. As a proud member of the Google for Startups Cloud Program, DataSort's infrastructure is built on enterprise-grade security. Files are processed securely in-memory, and we do not permanently store your uploaded spreadsheets on our servers.
Is DataSort free?
Yes. DataSort is 100% free to use with all core features included and no signup or credit card required. The Free plan handles files up to 500 rows with 5 AI runs every 20 minutes. Mid raises that to 5,000 rows per file and Pro removes the row limit entirely. If you only need more for a single file, a $2.99 Day Pass unlocks everything in Mid for 24 hours with no subscription.
Do I need Excel installed?
No. DataSort runs entirely in your browser. You only need the Excel or CSV file and an internet connection to clean, normalize, and merge your data.
Can DataSort merge Excel files?
Yes. DataSort merges Excel files directly. AI Smart Merge reads every sheet of every file you upload, matches columns whose names differ (Email vs Contact_Email), and combines them into one table. Most merges fail because headers and formats are inconsistent, so DataSort standardizes them as part of the merge rather than making you clean up first.
Is datasort.app related to datasort.in?
No. DataSort (datasort.app) is a free AI-powered tool for cleaning, merging, and converting Excel and CSV files. We are not affiliated with datasort.in, an Indian freelancer work portal. If you are looking for that portal or its worker login, please visit datasort.in. This site, datasort.app, is the spreadsheet-cleaning tool.
Can I edit the data myself after the AI cleans it?
Yes. The results table is a working surface, not a preview. Click the pencil on a cell, double-click it, or select it and press Enter to change a value, and on a phone or tablet just tap the cell. You can rename and resize columns, drag rows into a new order, delete rows, and tick rows to copy, export or delete them in bulk. Every change is marked in a fixed colour so you can see exactly what you touched, and Ctrl+Z (Cmd+Z on a Mac) undoes up to 25 steps.
Do manual edits use up my AI runs or my row limit?
No. Editing happens entirely in your browser and never calls the AI, so nothing you fix by hand counts against your operation limit. The Free plan's 5 runs per 20 minutes apply only to AI cleaning. You can correct as many cells as you like without spending one.
Will I lose my work if I close the tab?
No. Your work is saved automatically in your own browser, and a "Saved sessions" button at the bottom of the page brings it back when you return. Nothing is uploaded to our servers, which is how the zero data retention promise stays true. It also means saved work does not follow you to a different device or browser, and clearing your browser data removes it. Free keeps your most recent session automatically; Mid can save up to 10 named sessions and Pro up to 50, and switch between them.
Can DataSort clean multiple sheets in an Excel workbook?
Yes. When you upload a multi-sheet Excel file (.xlsx or .xls), DataSort opens all sheets in a tab strip. You can switch between tabs, rename them, duplicate sheets, or clean the active sheet individually. You can also click "Clean all sheets" to clean every sheet in sequence with AI, or combine multiple sheets into a unified new tab.
Can I filter columns like in Excel or Google Sheets?
Yes. Every column header has a filter funnel icon that opens an interactive filter view. You can filter by values (searching and checking specific unique entries with row occurrence counts) or filter by condition (numeric thresholds, date ranges, or text patterns). Active filters display as chips above the table, and all filters can be removed with one click.
Why should I use DataSort instead of Microsoft Excel or Google Sheets?
Microsoft Excel requires expensive subscriptions, local installation, and complex manual steps like Power Query or VBA macros to clean dirty exports. Google Sheets frequently corrupts raw CSV imports by dropping leading zeros from phone numbers and IDs, and lacks native autonomous AI. DataSort is a free, browser-based spreadsheet alternative powered by Gemini 2.5 Flash. It opens instantly with no software installation, preserves exact text encodings and leading zeros, detects headers automatically, and merges sheets and files with AI schema alignment. You can also import a file straight from Google Sheets, clean it, and save it back to the same file.
Can DataSort import from Google Sheets and save back?
Yes. On Mid, Pro and the Day Pass, Import from Google Sheets opens a file from your Google Drive with Google's own picker, and DataSort can reach only the files you pick. Clean it, then Save to Google Sheets writes your sheets back over the original tabs, as new tabs, or into a new file. Refresh loads the latest version whenever you click it, and filters travel both ways.
Can DataSort send a sheet to Notion and import a Notion database?
Yes, on the Pro plan. Send to Notion in the Export menu turns the sheet you are looking at into a new Notion database, choosing a real property type for each column rather than making everything text, or updates an existing database row by row through a key column such as Email. Import from Notion brings a database back in as a sheet, and Refresh from Notion reloads it. Nothing syncs in the background: every read and write happens when you click, and your Notion connection is never stored.

Meet the Team

Maaz

Muhammad Maaz Ul Haq

Founder & Lead Engineer

Full-stack engineer building AI-first data tools. Focused on making serverless data cleaning accessible to everyone.

View LinkedIn Profile

More free DataSort tools

Excel Cleaner Clean messy Excel data with AI. Headers, junk rows, and formats get fixed automatically. CSV Cleaner Fix broken headers and standardize messy CSV exports without opening Excel. Remove Duplicates Dedupe Excel and CSV rows. Catches exact and fuzzy matches. Sort Data Online Sort and clean Excel or CSV columns automatically with AI. Merge Excel Files Combine multiple Excel or CSV files into one with AI schema matching. Merge Excel Sheets Combine two or more sheets or tabs into one table. Excel to JSON Convert Excel or CSV files to clean, valid JSON in seconds. Excel to SQL Turn spreadsheet rows into CREATE TABLE and INSERT statements.
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