Parse cron expression

Parse five-field Unix cron into explicit allowed values.

Local processing · Nothing is uploaded · 1 MB input limit

Input & settings

Paste text or drop a UTF-8 text file
Ready. Enter your input to begin.

How to use this tool

Paste your source, choose the supported options, then process. Inspect or download the complete result.

Limits and behavior

Supports lists, ascending ranges, positive steps, month/day names and Sunday 0 or 7. Uses traditional day-of-month OR day-of-week semantics. No seconds, Quartz L/W/#, scheduling or timezone conversion. Maximum total input 1 MB, output 3 MB, JSON nesting 64 levels. Processing stays in your browser worker. Input is limited to 1 MB and output to 3 MB. No input content is saved by CraftAI.

Understand a five-field cron schedule

Inspect the allowed values produced by a supported Unix cron expression.

Does it support every scheduler's extensions?

No. Quartz, Jenkins and cloud schedulers may use additional fields or special operators.

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