Free CSV & data tools online
6 free csv & data tools — instant, private, no sign-up
CSV Dataset Merger
Combine and concatenate multiple CSV datasets into a single consolidated spreadsheet, removing duplicate headers automatically.
Open tool →CSV Duplicate Remover
Identify and eliminate duplicate rows from CSV files with column-specific matching and instant clean download.
Open tool →CSV File Splitter
Split massive CSV spreadsheets into smaller chunk files by row count, preserving header rows automatically across all pieces.
Open tool →CSV to Markdown Table Converter
Convert raw CSV data into clean, formatted GitHub markdown tables with text alignment in 1 click.
Open tool →CSV Viewer & Inspector
Upload, inspect, sort, filter, and paginate CSV files in an interactive responsive browser spreadsheet.
Open tool →SQL to JSON Converter
Convert SQL table schema and INSERT statements into structured JSON arrays of objects with real-time formatting.
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