Cron Expression Explainer

Translate cron schedule expressions into clear human-readable English and calculate upcoming run times.

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Cron Expression Generator

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。

Translate cron schedule expressions into plain English

Understand any 5-field cron syntax without guessing. View clear human-readable sentences and upcoming execution timestamps.

技術仕様とアーキテクチャ

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

Tokenization, Deconstruction & Structural Analysis

The parser decomposes complex strings, commands, or protocol payloads into discrete, human-readable components. It isolates headers, query parameters, payload arguments, and metadata flags, displaying them in a structured key-value layout. This is essential for debugging failing HTTP requests, analyzing authentication tokens, or inspecting browser environment variables.

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: Use parsers to quickly inspect payloads copied directly from browser DevTools network tabs without writing manual regex extraction scripts.

連携ツール・次のステップ

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Parse and explain cron expressions. Validate cron syntax.

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よくある質問

What cron formats are supported?
Standard 5-field cron syntax (Minute, Hour, Day of Month, Month, Day of Week), standard step values (*/15), ranges (9-17), lists (1,15), and shortcuts like @daily, @hourly, @weekly, and @monthly.
How are the next execution times calculated?
The tool scans upcoming minutes from the current system clock to identify the next 5 chronological matches according to your cron criteria.
Why is Sunday represented as 0 and 7?
In standard Unix cron implementations, both 0 and 7 represent Sunday for backwards compatibility. Our explainer supports both conventions seamlessly.