無料オンラインCSVツール

DuckDB-WASMでブラウザ上で大容量ファイルを処理できます。

CSVから変換

CSV to JSON

Convert CSV files to JSON format instantly in your browser.

CSV to Parquet

Convert CSV files to Apache Parquet format instantly in your browser.

CSV to TSV

Convert CSV files to TSV (tab-separated) format instantly in your browser.

CSV to Excel

Convert CSV files to Excel (XLSX) format instantly in your browser.

CSVに変換

Excel to CSV

Convert Excel XLSX files to CSV format instantly in your browser.

JSON to CSV

Convert JSON files to CSV format instantly in your browser.

Parquet to CSV

Convert Apache Parquet files to CSV format instantly in your browser.