Free Online Data Consolidation Platform
Combine Multiple Files Into One Clean File
Welcome to Wheretools — the specialized web platform for data merging, file consolidation, dataset joining, duplicate removal, and format conversion. Effortlessly combine CSV, Excel, TSV, JSON, XML, and YAML datasets into a single organized file ready for download.
Universal Data Merger Tool
Select or drop your files below to combine datasets, map columns, clean data, and export your output file.
1 Upload Datasets
2 Map Columns & Clean
3 Preview & Download
Drop your files here, or click to browse
Supports CSV, XLSX, XLS, TSV, TXT, JSON, XML, YAML (Up to 50MB per file)
Supported File Formats & Encodings
CSV
XLSX
XLS
TSV
JSON
XML
YAML
Popular Data Consolidation Tools
Choose from our 100 specialized online tools for file merging, joining, and data cleaning
Merge Multiple Files
Combine multiple files of various formats into one consolidated output.
Merge CSV Files
Merge multiple CSV datasets seamlessly with automatic delimiter and header matching.
Merge Excel Files
Combine multiple Microsoft Excel workbooks into a single clean spreadsheet.
Merge XLS Files
Merge legacy XLS spreadsheet files into a unified output file.
Merge XLSX Files
Consolidate multiple XLSX modern Excel spreadsheets effortlessly.
Merge TSV Files
Combine tab-separated value files into a single master TSV file.
Merge TXT Data Files
Merge plain text structured data files into one organized master file.
Merge JSON Files
Flatten and combine multiple JSON arrays or objects into one downloadable file.
Merge XML Files
Combine multiple structured XML files into a consolidated tabular output.
Merge YAML Files
Merge multiple YAML data files into a single organized structure.
Append Rows
Stack rows from multiple data files vertically into a single consolidated table.
Combine Tables Vertically
Align column headers and stack tables top-to-bottom seamlessly.
Browse Tools by Category
Categorized utilities tailored for your specific dataset operations
File Merging
Tools for combining multiple datasets into a single structured master file across various formats.
10 Tools Available
Row Appending
Tools designed to stack tables vertically, combining monthly or periodic reporting rows effortlessly.
10 Tools Available
Data Joining
Perform SQL-style relational joins (INNER, LEFT, RIGHT, FULL OUTER) on datasets using primary keys.
10 Tools Available
Data Matching
Cross-reference customer records, email lists, product SKUs, and IDs to find matching or non-matching records.
10 Tools Available
Duplicate Management
Identify, filter, and remove duplicate rows across single or multiple merged datasets with precision.
10 Tools Available
Column Management
Reorder, merge, split, rename, compare, and standardize columns across multiple files.
10 Tools Available
Data Cleaning
Clean CSV and Excel datasets, trim whitespace, normalize text cases, dates, phone numbers, and emails.
10 Tools Available
Data Consolidation
Consolidate complex business, sales, inventory, and financial datasets into standardized reports.
10 Tools Available
Format Conversion
Merge files and instantly convert output into CSV, Excel, JSON, XML, TSV, or YAML formats.
10 Tools Available
Advanced Operations
Advanced data manipulation, master dataset creation, multi-file comparisons, and complex filter pipelines.
10 Tools Available
Latest Data Management Tutorials
Comprehensive guides, best practices, and automated workflows from our editorial team
Data Merging Guides
Complete Guide: Merge Multiple Files - Best Practices, Workflows, & Automation
Data Cleaning Tutorials
Complete Guide: Merge CSV Files - Best Practices, Workflows, & Automation
Database & SQL Joins
Complete Guide: Merge Excel Files - Best Practices, Workflows, & Automation
Excel & CSV Workflows
Complete Guide: Merge XLS Files - Best Practices, Workflows, & Automation
Data Security & Privacy
Complete Guide: Merge XLSX Files - Best Practices, Workflows, & Automation
Data Merging Guides
Complete Guide: Merge TSV Files - Best Practices, Workflows, & Automation