Tools
All tools
Browse all available tools for CSV, Excel, JSON, data cleanup, file conversion, sorting, filtering, validation, and other everyday workflows.
CSV to JSON
Convert CSV files to JSON online and transform spreadsheet data into structured JSON for apps, APIs, scripts, and automation workflows.
JSON to CSV
Convert JSON arrays into CSV files.
CSV Cleaner
Clean CSV files by removing empty rows and preparing data for imports, reports, and automation workflows.
Remove Duplicates CSV
Remove duplicate rows from CSV files online and prepare cleaner data for imports, reports, analysis, and automation workflows.
CSV to Excel
Convert CSV files into Excel (.xlsx).
Excel to CSV
Convert Excel files into CSV.
Excel to JSON
Convert Excel files into formatted JSON.
Merge CSV Files
Merge multiple CSV files into one.
Split CSV File
Split a CSV file into smaller parts.
CSV Column Remover
Remove the last column from a CSV file.
Remove Empty Columns CSV
Remove columns that contain only empty values from your CSV file.
CSV Column Selector
Select specific columns from your CSV file and remove the rest.
CSV Header Renamer
Rename one or more CSV headers using a simple mapping format.
CSV Row Counter
Count CSV rows online and quickly measure dataset size before splitting, importing, validating, or analyzing CSV files.
CSV Sorter
Sort your CSV rows by a selected column.
CSV Filter Rows
Filter CSV rows by a column and value.
CSV Add Column
Add a new column with the same value to all CSV rows.
CSV Remove Column
Remove a specific column from your CSV file.
CSV Column Merger
Merge two CSV columns into a new one.
CSV Validator
Validate CSV files online, detect malformed rows, check structure, and find formatting issues before imports or automation workflows.
Excel Cleaner
Clean Excel files by removing empty rows, fixing formatting, and preparing datasets.
Free online tools for CSV, Excel, JSON, and file conversion
This tools page collects all available utilities for working with CSV, Excel, and JSON files online. You can clean messy datasets, remove duplicates, validate CSV structure, sort rows, filter records, merge files, split large datasets, and convert files between common data formats.
These free browser-based tools are useful for developers, analysts, operations workflows, admin tasks, spreadsheet cleanup, reporting, and preparing structured data before imports or automation tasks.