データ&スプレッドシート

CSV Splitter

Split a large CSV file into smaller files by row count or by unique values in a column

Drop a CSV file here or click to upload

Supports standard CSV with optional header row

All processing happens entirely in your browser — no data is uploaded to any server. Split by rows divides your file into equal-sized chunks. Split by column groups rows by unique values in a chosen column (e.g. country, department, status).

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CSV Splitter — Free Online Tool | FreeTool24 | FreeTool24