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Cron 式パーサー

Cron parser: parse 5-field cron expressions into readable descriptions and next run times for scheduling, with one-click copy and offline.

使い方

標準の5項目 Cron 式（分 時 日 月 曜日）を入力し、表示回数を設定。説明と次の実行時刻がリアルタイム生成。

Overview

Cron Expression Parser is a Developer tool. Cron parser: parse 5-field cron expressions into readable descriptions and next run times for scheduling, with one-click copy and offline. It runs 100% in your browser with no upload, so you get instant results with privacy. Whether you need a quick answer or batch processing with precise control, you can enter, validate and export in seconds. The UI is responsive on mobile, tablet and desktop and supports one-click copy.

Use cases

  • Daily use of Cron Expression Parser: Enter a standard 5-field cron (minute hour day month weekday), set how many runs to show. Description and next runs update live. — enter and get instant results without manual lookup.
  • One-click copy keeps results ready to save, check or share with family and pros.
  • Use Cron Expression Parser offline or on poor network — all calculations stay local and private.
  • Convert between CSV/JSON/Markdown
  • Format and validate JSON

How to use

  1. 1 Enter a standard 5-field cron (minute hour day month weekday), set how many runs to show. Description and next runs update live..
  2. 2 Pick action and options
  3. 3 Fix highlighted errors
  4. 4 Copy or export

Highlights

  • Local & private: processing stays in your browser
  • Live validation with tolerant parsing
  • One-click copy and export for docs, code or sheets
  • Batch and offline support under poor network

Notes

  • Watch greedy vs lazy regex
  • Strict JSON disallows comments/trailing commas
  • Disable live validation for large files

FAQ

Why invalid?
Trailing commas, single quotes or BOM often cause it.
Offline?
Yes, parsing is local.
How is Cron Expression Parser different?
It runs locally with a focus on speed and privacy, plus tolerant parsing for “cron parser, crontab” and one-click copy for reuse.
Can I use results in official reports?
Use it as a working draft and cross-check with authoritative sources; keep the exported log and parameters for traceability.
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