JSON to CSV Converter

Convert JSON data to CSV format. Export JSON to spreadsheet-friendly format.

シェア:

JSONとは？ →

⇄ 逆方向の変換が必要ですか？
CSV to JSON

主な特徴とプライバシー保証

  • ✓ 100%ブラウザ内完結: データは端末外に出ず、外部サーバーに送信されることはありません。
  • ✓ リアルタイム高速出力: ネットワーク遅延ゼロ、入力と同時に即時反映・高速コピー。
  • ✓ 永久無料＆制限なし: 会員登録不要、課金なし、1日の利用制限も一切ありません。
  • ✓ 標準規格準拠: RFC、ISO、W3Cウェブ標準仕様に厳密に準拠して設計されています。

Convert JSON to CSV in the browser

Turn JSON arrays or table-like objects into comma- or tab-separated text you can open in Excel or Google Sheets. High-intent searches like “json to csv online” expect fast conversion without installing software—this tool matches that workflow.

技術仕様とアーキテクチャ

Technical Standard:
RFC 4180 (Common Format and MIME Type for CSV Files)
Execution Environment:
100% Client-Side Browser Sandbox
Data Privacy:
Zero Server Storage / No Tracking
Processing Speed:
Real-time local CPU execution
Cross-Platform:
Works on Windows, macOS, Linux, iOS & Android

How Client-Side Data Conversion Works

Data conversion takes raw text in a source syntax and transforms it into a target schema or format. The input is first parsed into an abstract syntax tree (AST) or typed in-memory objects. The converter normalizes data types, resolves nested structures, escapes special characters according to target specifications, and serializes the result into the destination format—all executed in real time inside your browser memory without server uploads.

1

Provide Input

Enter, paste, or upload your data into the input field above.

2

Configure & Process

The tool immediately processes your input in real time according to your chosen settings.

3

Copy or Save

Use the Copy button to copy the output to your clipboard, or download the result to your device.

開発者メモ: Ensure all special characters and string delimiters are properly closed in your input to avoid parse errors during conversion.
JSON to CSV – Free Online Tool Screenshot
JSON to CSV インターフェース プレビュー

主な利用シーン

  • Export API list endpoints to a spreadsheet for non-developers
  • Prepare sample datasets for BI tools that expect CSV first
  • Quick one-off conversions without Python pandas or jq installed
  • Sanity-check column names before loading into databases

関連のおすすめツール

CSV to JSON JSON Formatter JSON Validator

連携ツール・次のステップ

JSON to CSVと合わせてよく使われる便利な開発者ユーティリティ

Validate JSON validators

JSON Validator

Validate JSON syntax. Find and fix JSON errors.

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Validate RFC 4180 validators

CSV Validator

Validate CSV format and structure.

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Excel Alternative excel-tools

Excel To JSON Converter

Convert Excel spreadsheets (.xlsx, .xls) to JSON format in your browser. 100% client-side — your files never leave your device.

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Base64 to Image

Convert Base64 encoded strings to images. Decode and display images.

Image to Base64

Convert images to Base64 encoding. Embed images in HTML or JSON.

HTML to Text

Convert HTML to plain text. Extract readable content from HTML.

Pug to HTML

Convert Pug (Jade) templates to HTML.

YAML to JSON

Convert YAML to JSON format.

よくある質問

How do I convert JSON to CSV online?
Paste or load your JSON, choose delimiter and header options if available, then copy the CSV output. Flat tabular data converts cleanly; deeply nested JSON may need flattening or a different export shape.
What if my JSON has quotes inside strings?
RFC-style CSV escaping applies: double quotes in fields are doubled. If output looks wrong, check for mixed encodings or BOM at the start of the file.
Can I go from CSV back to JSON?
Yes. Use our CSV to JSON converter for the reverse path—keep both in your data-cleaning pipeline.